Name: Prof. Dr. Ulf Wiedwald Mail address: Room office: ME 351 Phone office: 0203/37-92633 Room Lab: MD 346 2.46 Phone Lab: 0203/37-92953 98136 Member since 2013-03-01 Dissertation: Interface Magnetism in Co/CoO core-shell nanoparticles and their transformation to pure metallic nanoparticles
Publication list of Prof. Dr. Ulf Wiedwald
2024
135 - An ultrasensitive molecular detector for direct sensing of spin currents at room temperature
Thomas Feggeler, Ralf Meckenstock, Tanja Strusch, Maria V. Efremova, Michael Farle and Ulf Wiedwald
ACS Applied Materials & Interfaces , accepted (2024) DOI: 10.1021/acsami.4c09015
134 - Semisynthetic Ferritin-based Nanoparticles with High Magnetic Anisotropy for Spatial Magnetic Manipulation and Inductive Heating
Andreas Neusch, Ulf Wiedwald, Iuliia P. Novoselova, Daniel A. Kuckla, Nikolaos Tetos, Sarah Sadik, Philipp Hagemann, Michael Farle and Cornelia Monzel
Nanoscale 16, 15113-15127 (2024) DOI: 10.1039/D4NR01652A
133 - Single crystal growth and physical characterization of the quaternary κ-phase Mo$_{3(2+y)}$Ga$_{3(1-x)}$Fe$_{1+3(1-y+x)}$C$_4$
Hanna Pazniak, Thierry Ouisse, Isabelle Gelard, Ulf Wiedwald, Laurent Jouffret, Fabrice Wilhelm, and Andrei Rogalev
Skripta Materialia 251, 116222 (2024) DOI: 10.1016/j.scriptamat.2024.116222
132 - Electronic and Thermal Properties of Nb$_2$CCl$_2$ MXenes
Hanna Pazniak, Thierry Ouisse, Ulf Wiedwald, Jesus Gonzalez-Julian, Takahiro Ito, Fabrice Wilhelm, Andrei Rogalev, Serge Quessada
Open Ceramics 18, 1005792024 (2024) DOI: 10.1016/j.oceram.2024.100579
131 - Between carbide and nitride MAX phases: Sol-gel assisted synthesis and characterization of the carbonitride phase Cr$_2$GaC$_{1-x}$N$_x$
Niels Kubitza, Isabel Huck, Hanna Pazniak, Curran Kalha, David Koch, Bo Zhao, Pardeep K. Thakur, Tien-Lin Lee, Aysha A. Riaz, Wolfgang Donner, Hongbin Zhang, Benjamin Moss, Ulf Wiedwald, Anna Regoutz, and Christina S. Birkel
Journal of Materials Chemistry C 12, 7552-7561 (2024) DOI: 10.1039/D4TC00067F
130 - Control of physical properties in BiFeO$_3$ nanoparticles via Sm$^{3+}$ and Co$^{2+}$ ion doping
Kyrillos Papadopoulos, Eirini Myrovali, Astita Dubey, Lamprini Malletzidou, Doru C. Lupascu, Vladimir V. Shvartsman, Ulf Wiedwald and Mavroeidis Angelakeris
Nanotechnology 35, 015707 (2024) DOI: 10.1088/1361-6528/acfcc2
2023
129 - Rapid sol-gel synthesis approach for the preparation of the magnetocaloric antiperovskite Mn$_3$GaC
Niels Kubitza, Pedram Babaei, Ulf Wiedwald, and Christina S. Birkel
Chemistry of Materials 35, 9175-9181 (2023) DOI: 10.1021/acs.chemmater.3c01905
128 - Cation substitution and size confinement effects on structure, magnetism and magnetic hyperthermia of BiFeO$_3$-based multiferroic nanoparticles and hydrogels
Kyrillos Papadopoulos, Eirini Myrovali, Dimitrios Karfaridis, Michael Farle, Ulf Wiedwald and Mavroeidis Angelakeris
Journal of Alloys and Compounds 969, 172337 (2023) DOI: 10.1016/j.jallcom.2023.172337
127 - Helical magnetic structure of epitaxial films of nanolaminated Mn$_2$GaC MAX phase
J. Dey, E. Jedryka, R. Kalvig, U. Wiedwald, M. Farle, J. Rosen, and M. Wojcik
Physical Review B 108, 054413 (2023) DOI: 10.1103/PhysRevB.108.054413
126 - Non-collinear magnetic structure of the MAX phase Mn$_2$GaC epitaxial films inferred from zero-field NMR study
J. Dey, M. Wojcik, E. Jedryka, R. Kalvig, U. Wiedwald, R. Salikhov, M. Farle, and J. Rosen
Ceramics International 49, 24235-24238 (2023) DOI: 10.1016/j.ceramint.2022.11.265
125 - One pot, scalable synthesis of hydroxide derived ferrite magnetic nanoparticles
Kaustubh Sudhakar, Takayuki Kono, Tarek El-Melegy, Hussein Badr, Prajwal M. Laxmeesha, Kiana Montazeri, Anna S. Semisalova, Michael Farle, Ulf Wiedwald, Michel W. Barsoum
Journal of Magnetism and Magnetic Materials 582, 170986 (2023) DOI: 10.1016/j.jmmm.2023.170986
124 - Microwave-Assisted Synthesis of the New Solid-Solution (V1-xCrx)2GaC (0 < x < 1), a Pauli Paramagnet Almost Matching the Stoner Criterion for x = 0.80
Niels Kubitza, Ruiwen Xie, Ivan Tarasov, Chen Shen, Hongbin Zhang, Ulf Wiedwald, and Christina S. Birkel
Chemistry of Materials 35, 4427-4434 (2023) DOI: 10.1021/acs.chemmater.3c00591
123 - Emergence of net magnetization by magnetic field biased diffusion in antiferromagnetic L1$_0$ NiMn
Nicolas Josten, Olga Miroshkina, Sakia Noorzayee, Benjamin Zingsem, Asli Cakir, Mehmet Acet, Ulf Wiedwald, Markus Gruner, and Michael Farle
Physical Review B 107, 174417 (2023) DOI: 10.1103/PhysRevB.107.174417
122 - Reactive single-step hot-pressing and magnetocaloric performance of polycrystalline Fe$_2$Al$_{1.15-x}$B$_2$Ge$_x$Ga$_x$ ($x$=0, 0.05) MAB phases
Benedikt Beckmann, Tarek A. El-Melegy, David Koch, Ulf Wiedwald, Michael Farle, Fernando Maccari, Joshua Snyder, Konstantin P. Skokov, Michel Barsoum, Oliver Gutfleisch
Journal of Applied Physics 133, 173903 (2023) DOI: 10.1063/5.0143037
121 - Synthesis, characterization and modelling of a chemically ordered quaternary boride, Mo$_4$MnSiB$_2$
Quanzheng Tao, Joseph Halim, Justinas Palisaitis, Adam Carlsson, Martin Dahlqvist, Ulf Wiedwald, Michael Farle, Per O. A. Persson, Johanna Rosen
Crystal Growth & Design 23, 3258-3263 (2023) DOI: 10.1021/acs.cgd.2c01416
120 - Towards the separation of different heating mechanisms in magnetic particle hyperthermia
Eirini Myrovali, Kyrillos Papadopoulos, Georgia Charalampous, Paraskevi Kesapidou, George Vourlias, Thomas Kehagias, Makis Angelakeris and Ulf Wiedwald
ACS Omega 8, 12955-12967 (2023) DOI: 10.1021/acsomega.2c05962
119 - Control of multiferroic features in BiFeO$_3$ nanoparticles by facile synthetic parameters
Kyrillos Papadopoulos, Eirini Myrovali, Lamprini Malletzidou, Dimitrios Karfaridis, Ivan Tarasov, George Vourlias, Charalampos Sarafidis, Marina Spasova, Michael Farle, Ulf Wiedwald, Mavroeidis Angelakeris
Ceramics International 49, 18552-18564 (2023) DOI: 10.1016/j.ceramint.2023.02.229
2022
118 - Cr$_3$GeN: A nitride with orthorhombic antiperovskite structure
Andreas Reitz, Hanna Pazniak, Chen Shen, Harish K. Singh, K. Jayanthi, Niels Kubitza, Alexandra Navrotsky, Hongbin Zhang, Ulf Wiedwald, and Christina S. Birkel
Chemistry of Materials 34, 10304-10310 (2022) DOI: 10.1021/acs.chemmater.2c01524
117 - From MAX Phase Carbides to Nitrides: Synthesis of V$_2$GaC, V$_2$GaN, and the Carbonitride V$_2$GaC$_{1-x}$N$_x$
Niels Kubitza, Andreas Reitz, Anne-Marie Zieschang, Hanna Pazniak, Barbara Albert, Curran Kalha, Christoph Schlueter, Anna Regoutz, Ulf Wiedwald and Christina S. Birkel
Inorganic Chemistry 61, 10634-10641 (2022) DOI: 10.1021/acs.inorgchem.2c00200
116 - Scalable, inexpensive, one-pot, facile synthesis of crystalline two-dimensional birnessite flakes
Hussein O. Badr, Kiana Montazeri, Tarek El-Melegy, Varun Natu, Michael Carey, Ramchandra Gawa, Phu Phan, Qian Qian, Christopher Y. Li, Ulf Wiedwald, Michael Farle, Erika Colin-Ulloa, Lyubov V. Titova, Marc Currie, Thierry Ouisse, Maxime Barbier, Andrei Rogalev, Fabrice Wilhelm, Marcus Hans, Jochen M. Schneider, Christopher Tandoc, Young-Jie Hu, Joshua Snyder, and Michel W. Barsoum
Matter 5, 1-17 (2022) DOI: 10.1016/j.matt.2022.05.038
115 - Ion Implantation Enhanced Exfoliation Efficiency of V${_2}$AlC Single Crystals: Implications for Large V$_2$CT$_z$ Nanosheet Production
Hanna Pazniak, Simon Hurand, Nadia Guignard, Stephane Celerier, Ulf Wiedwald, Thierry Ouisse, Marie-Laure David, and Vincent Mauchamp
ACS Applied Nano Materials 5, 8029-8037 (2022) DOI: 10.1021/acsanm.2c01143
114 - Magnetic phase diagram of (Mo$_{2/3}$RE$_{1/3}$)$_2$AlC, RE=Tb and Dy, studied by magnetization, specific heat, and neutron diffraction analysis
Quanzheng Tao, Maxime Barbier, Aurelija Mockute, Clemens Ritter, Ruslan Salikhov, Ulf Wiedwald, Stuart Calder, Christine Opagiste, Rose-Marie Galera, Michael Farle, Thierry Ouisse, Johanna Rosen
Journal of Physics: Condensed Matter 34, 215801 (2022) DOI: 10.1088/1361-648X/ac5bcf
113 - Cobalt Ferrite Nanoparticles for Tumor Therapy: Effective Heating Versus Possible Toxicity
Anastasiia S. Garanina, Alexey A. Nikitin, Tatiana O. Abakumova, Alevtina S. Semkina, Alexandra O. Prelovskaya, Victor A. Naumenko, Alexander S. Erofeev, Peter V. Gorelkin, Alexander G. Majouga, Maxim A. Abakumov and Ulf Wiedwald
Nanomaterials 12, 38 (2022) DOI: 10.3390/nano12010038
2021
112 - Phase Stability of Nanolaminated Epitaxial (Cr$_{1-x}$Fe$_x$)$_2$AlC MAX Phase Thin Films on MgO(111) and Al$_2$O$_3$(0001) for Use as Conductive Coatings
Hanna Pazniak, Marc Stevens, Martin Dahlqvist, Benjamin Zingsem, Lidia Kibkalo, Merve Felek, Sergey Varnakov, Michael Farle, Johanna Rosen, and Ulf Wiedwald
ACS Applied Nano Materials 4, 13761-13770 (2021) DOI: 10.1021/acsanm.1c03166
111 - The effect of the composition and pressure on the phase stability and electronic, magnetic, and elastic properties of M$_{2}$AX (M=Mn, Fe; A=Al, Ga, Si, Ge; X=C, N) phases
Vyacheslav Zhandun, Natalia Zamkova, Oksana N. Draganyuk, Aleksey S. Shinkorenko, Ulf Wiedwald, Sergey G. Ovchinnikov, and Michael Farle
Physical Chemistry Chemical Physics 23, 26376 (2021) DOI: 10.1039/d1cp03427h
110 - Synthesis, phase purification and magnetic characterization of the $(Cr_{1-x}Mn_x)_2AlC$ MAX-phase
Kirill Sobolev, Hanna Pazniak, Michael Farle, Valeria Rodionova, Ulf Wiedwald
Journal of Materials Chemistry C 9, 16516-16522 (2021) DOI: 10.1039/D1TC03092B
109 - Two-Dimensional Molybdenum Carbide MXenes for Enhanced Selective Detection of Humidity in Air
Hanna Pazniak, Alexey S. Varezhnikov, Dmitry A. Kolosov, Ilya A. Plugin, Alessia Di Vito, Olga E. Glukhova, Polina M. Sheverdyaeva, Marina Spasova, Igor Kaikov, Evgeny A. Kolesnikov, Paolo Moras, Alexey M. Bainyashev, Maksim A. Solomatin, Ilia Kiselev, Ulf Wiedwald, Victor V. Sysoev
Advanced Materials 33, 2104878 (2021) DOI: 10.1002/adma.202104878
108 - Magnetic Nanoprobes for Spatio-Mechanical Manipulation in Single Cells
Iuliia P. Novoselova, Andreas Neusch, Julia-Sarita Brand, Marius Otten, Mohammad Reza Safari, Nina Bartels, Matthias Karg, Michael Farle, Ulf Wiedwald and Cornelia Monzel
Nanomaterials 11, 2267 (2021) DOI: 10.3390/nano11092267
107 - Structure determination and magnetic properties of the Mn-doped MAX phase Cr2GaC
Jan P. Siebert, Shayna Mallett, Mikkel Juelsholt, Hanna Pazniak, Ulf Wiedwald, Katharine Page, Christina S. Birkel
Materials Chemistry Frontiers 5, 6082-6091 (2021) DOI: 10.1039/D1QM00454A
106 - Structural, Electronic Paramagnetic Resonance and Magnetic Properties of Praseodymium-doped rare earth CeO2 Semiconductors
L. L. Oliveira, J. A. Cortes, B. S. Caldeira, T. Strusch, U. Wiedwald, A. Z. Simoes
Ceramics International 47, 20768-20780 (2021) DOI: 10.1016/j.ceramint.2021.04.133
105 - Solid solution AuFe nanoparticles and their transformation to Au/Fe Janus nanocrystals
Maria V. Efremova, Marina Spasova, Markus Heidelmann, Ivan S. Grebennikov, Zi-An Li, Anastasiia S. Garanina, Iana O. Tcareva, Alexander S. Savchenko, Michael Farle, Natalia L. Klyachko, Alexander G. Majouga, and Ulf Wiedwald
Nanoscale 13, 10402-10413 (2021) DOI: 10.1039/D1NR00383F
104 - Co-Au core-shell nanoparticle formation by liquid-phase laser ablation is ruled by thermodynamics and kinetics
Jacob Johny, Marius Kamp, Oleg Prymak, Anna Tymoczko, Ulf Wiedwald, Christoph Rehbock, Ulrich Sch�rmann, Radian Popescu, Dagmar Gerthsen, Lorenz Kienle, Sadasivan Shaji and Stephan Barcikowski
Journal of Physical Chemistry C 125, 9534-9549 (2021) DOI: 10.1021/acs.jpcc.1c02138
103 - Pulsed laser deposition of epitaxial Cr2AlC MAX phase thin films on MgO(111) and Al2O3 (0001)
Marc Stevens, Hanna Pazniak, Alexander Jemiola, Merve Felek, Michael Farle, and Ulf Wiedwald
Materials Research Letters 9, 343-349 (2021) DOI: 10.1080/21663831.2021.1920510
102 - Long-range ordering effects in magnetic nanoparticles
Eirini Myrovali, Kyrillos Papadopoulos, Irene Iglesias, Marina Spasova, Michael Farle, Ulf Wiedwald, and Makis Angelakeris
ACS Applied Materials & Interfaces 13, 21602-21612 (2021) DOI: 10.1021/acsami.1c01820
101 - Magnetic Nanoparticles as a Tool for Remote DNA Manipulations at a Single-Molecule Level
Aleksey A. Nikitin, Anton Yu. Yurenya, Timofei S. Zatsepin, Ilya O. Aparin, Vladimir P. Chekhonin, Alexander G. Majouga, Michael Farle, Ulf Wiedwald and Maxim A. Abakumov
ACS Applied Materials & Interfaces 13, 14458-14469 (2021) DOI: 10.1021/acsami.0c21002
100 - Limited Elemental Mixing in Nanoparticles Generated by Ultrashort Pulse Laser Ablation of AgCu Bilayer Thin Films in a Liquid Environment: Atomistic Modeling and Experiments
Cheng-Yu Shih, Chaobo Chen, Christoph Rehbock, Anna Tymoczko, Ulf Wiedwald, Marius Kamp, Ulrich Schuermann, Lorenz Kienle, Stephan Barcikowski, Leonid V. Zhigilei
Journal of Physical Chemistry C 125, 2132-2155 (2021) DOI: 10.1021/acs.jpcc.0c09970
99 - Optical and magneto-optical properties of epitaxial Mn2GaC MAX phase thin film
Sergey Lyaschenko, Olga Maximova, Dmitriy Shevtsov, Sergey Varnakov, Ivan Tarasov, Ulf Wiedwald, Johanna Rosen, Sergei Ovchinnikov, Michael Farle
Journal of Magnetism and Magnetic Materials 528, 167803 (2021) DOI: 10.1016/j.jmmm.2021.167803
98 - Beyond Solid Solution High Entropy Alloys: Tailoring Magnetic Properties via Spinodal Decomposition
Ziyuan Rao, Biswanath Dutta, Fritz K�rmann, Wenjun Lu, Xuyang Zhou, Chang Liu, Alisson Kwiatkowski da Silva, Ulf Wiedwald, Marina Spasova, Michael Farle, Dirk Ponge, Baptiste Gault, J�rg Neugebauer, Dierk Raabe, Zhiming Li
Advanced Functional Materials 31, 2007668 (2021) DOI: 10.1002/adfm.202007668
2020
97 - Ptychographic Imaging and Micromagnetic Modelling of Thermal Melting of Nanoscale Magnetic Domains in Antidot Lattices
Joachim Gr�fe, Maxim Skripnik, Georg Dieterle, Felix Haering, Markus Weigand, Iuliia Bykova, Nick Tr�ger, Hermann Stoll, Tolek Tyliszczak, David Vine, Paul Ziemann, Ulf Wiedwald, David Shapiro, Ulrich Nowak, Gisela Sch�tz, and Eberhard J. Goering
AIP Advances 10, 125122 (2020) DOI: 10.1063/5.0025784
96 - Magnetic and Electronic Properties of Highly Mn-Doped �-NaGdF4 and �-NaEuF4 Nanoparticles with a Narrow Size Distribution
Lilli Schneider, Jannis Wehmeier, Ulf Wiedwald, Jari Rodewald, Vadim R. Galakhov, Margarita S. Udintseva, Vitaly Mesilov, Florin Radu, Chen Luo, Johann P. Klare, Heinz-J�rgen Steinhoff, Markus Haase, and Karsten Kuepper
The Journal of Physical Chemistry C 124, 18194-18202 (2020) DOI: 10.1021/acs.jpcc.0c04639
95 - Manipulation of the size and phase composition of yttrium iron garnet and perovskite nanoparticles by pulsed laser post-processing in liquid
Tim Hupfeld, Frederic Stein, Stephan Barcikowski, Bilal G�kce, Ulf Wiedwald
Molecules 25, 1869 (2020) DOI: 10.3390/molecules25081869
94 - Unravelling the Nucleation, Growth, and Faceting of Magnetite-Gold Nanohybrids
Yulia A. Nalench , Igor V. Shchetinin, Alexander Skorikov, Pavel S. Mogilnikov, Michael Farle, Alexander G. Savchenko, Alexander G. Majouga, Maxim A. Abakumov and Ulf Wiedwald
Journal of Materials Chemistry B 8, 3886-3895 (2020) DOI: 10.1039/C9TB02721A
93 - Temperature-controlled magnetic nanoparticles hyperthermia inhibits primary tumor growth and metastases dissemination
Anastasiia S. Garanina, Victor A. Naumenko, Aleksey A. Nikitin, Eirini Myrovali, Anna Y. Petukhova, Svetlana V. Klimyuk, Yulia A. Nalench, Artem R. Ilyasov, Stepan S.Vodopyanov, Alexander S. Erofeev, Peter V. Gorelkin, Makis Angelakeris, Alexander G. Savchenko, Ulf Wiedwald, Alexander G. Majouga, Maxim A. Abakumov
Nanomedicine: Nanotechnology, Biology and Medicine 25, 102171 (2020) DOI: 10.1016/j.nano.2020.102171
2019
92 - Direct measurement of anisotropic conductivity in a nanolaminated (Mn0.5Cr0.5)2GaC thin film
Tim Flatten, Frank Matthes, Andrejs Petruhins, Ruslan Salikhov, Ulf Wiedwald, Michael Farle, Johanna Rosen, Daniel E. B�rgler, and Claus M. Schneider
Applied Physics Letters 115, 094101 (2019) DOI: 10.1063/1.5115347
91 - Sol�gel based synthesis and enhanced processability of MAX phase Cr2GaC
Jan Paul Siebert, Lothar Bischoff, Maren Lepple, Alexander Zintler, Leopoldo Molina-Luna, Ulf Wiedwald and Christina S. Birkel
Journal of Materials Chemistry C 7 , 6034-6040 (2019) DOI: 10.1039/C9TC01416K
90 - Atomically Layered and Ordered Rare-Earth i-MAX Phases: A New Class of Magnetic Quaternary Compounds
Quanzheng Tao, Jun Lu, Martin Dahlqvist, Aurelija Mockute, Stuart Calder, Andrejs Petruhins, Rahele Meshkian, Oleg Rivin, Daniel Potashnikov, Elad Caspi, Hagai Shaked, Andreas Hoser, Christine Opagiste, Rose-Marie Galera, Ruslan Salikhov, Ulf Wiedwald, Clemens Ritter, Andrew R. Wildes, B�rje Johansson, Lars Hultman, Michael Farle, Michel W. Barsoum, and Johanna Rosen
Chemistry of Materials 31, 2476-2485 (2019) DOI: 10.1021/acs.chemmater.8b05298
89 - Shell-ferromagnetism and decomposition in off-stoichiometric Ni50Mn50-xSbx Heuslers
Z. Wanjiku, A. Cakir, F. Scheibel, U. Wiedwald, M. Farle and M. Acet
J. Appl. Phys. 125, 043902 (2019) DOI: 10.1063/1.5057763
88 - Long-term stability and thickness dependence of magnetism in thin (Cr0.5Mn0.5)2GaC MAX phase films
Iuliia Novoselova, Andrejs Petruhins, Ulf Wiedwald, Dieter Weller, Johanna Rosen, Michael Farle and Ruslan Salikhov
Materials Research Letters 7, 159�163 (2019) DOI: 10.1080/21663831.2019.1570980
2018
87 - Size-selected Fe3O4�Au hybrid nanoparticles for improved magnetism-based theranostics
Maria V. Efremova, Yulia A. Nalench, Eirini Myrovali, Anastasiia S. Garanina, Ivan S. Grebennikov, Polina K. Gifer, Maxim A. Abakumov, Marina Spasova, Makis Angelakeris, Alexander G. Savchenko, Michael Farle, Natalia L. Klyachko, Alexander G. Majouga and Ulf Wiedwald
Beilstein Journal of Nanotechnology 9, 2684-2699 (2018) DOI: 10.3762/bjnano.9.251
86 - Magnetic Fe@FeOx, Fe@C and α-Fe2O3 Single-Crystal Nanoblends Synthesized by Femtosecond Laser Ablation of Fe in Acetone
Dongshi Zhang, Wonsuk Choi, Yugo Oshima, Ulf Wiedwald, Sung-Hak Cho, Hsiu-Pen Lin,Yaw Kuen Li, Yoshihiro Ito, and Koji Sugioka
Nanomaterials 8, 631 (2018) DOI: 10.3390/nano8080631
85 - Magnetite-Gold nanohybrids as ideal all-in-one platforms for theranostics
Maria V. Efremova, Victor A. Naumenko, Marina Spasova, Anastasiia S. Garanina, Maxim A. Abakumov, Anastasia D. Blokhina, Pavel A. Melnikov, Alexandra O. Prelovskaya, Markus Heidelmann, Zi-An Li, Zheng Ma, Igor V. Shchetinin, Yuri I. Golovin, Igor I. Kireev, Alexander G. Savchenko, Vladimir P. Chekhonin, Natalia L. Klyachko, Michael Farle, Alexander G. Majouga and Ulf Wiedwald
Scientific Reports 8, 11295 (2018) DOI: 10.1038/s41598-018-29618-w
84 - Genetically Controlled Lysosomal Entrapment of Superparamagnetic Ferritin for Multimodal and Multiscale Imaging and Actuation with Low Tissue Attenuation
Christoph Massner, Felix Sigmund, Susanne Pettinger, Markus Seeger, Carolin Hartmann, Natalia P. Ivleva, Reinhard Niessner, Helmut Fuchs, Martin Hrabe de Angelis, Anja Stelzl, Neha Lal Koonakampully, Hannes Rolbieski, Ulf Wiedwald, Marina Spasova, Wolfgang Wurst, Vasilis Ntziachristos, Michael Winklhofer, and Gil G. Westmeyer
Advanced Functional Materials 28, 1706793 (2018) DOI: 10.1002/adfm.201706793
83 - Magnetic properties and structural characterization of layered (Cr0.5Mn0.5)2AuC synthesized by thermally induced substitutional reaction in (Cr0.5Mn0.5)2GaC
Chung-Chuan Lai, Quanzheng Tao, Hossein Fashandi, Ulf Wiedwald, Ruslan Salikhov, Michael Farle, Andrejs Petruhins, Jun Lu, Lars Hultman, Per Eklund, and Johanna Rosen
APL Materials 6, 026104 (2018) DOI: 10.1063/1.5006304
82 - Large uniaxial magnetostriction with sign inversion at the first order phase transition in the nanolaminated Mn2GaC MAX phase
Iu. Novoselova, A. Petruhins, U. Wiedwald, A. S. Ingason, T. Hase, F. Magnus, V. Kapaklis, J. Palisaitis, M. Spasova, M. Farle, J. Rosen, and R. Salikhov
Scientific Reports 8, 2637 (2018) DOI: 10.1038/s41598-018-20903-2
81 - Structural, magnetic and electrical transport properties of non-conventionally prepared MAX phases V2AlC and (V/Mn)2AlC
C. M. Hamm, M. Duerrschnabel, L. Molina, R. Salikhov, D. Spoddig, M. Farle, U. Wiedwald and C. S. Birkel
Materials Chemistry Frontiers 2, 483-490 (2018) DOI: 10.1039/C7QM00488E
2017
80 - Doubling of the magnetic energy product in ferromagnetic nanowires at ambient temperature by capping their tips with an antiferromagnet
Fangzhou Wang, Ruslan Salikhov, Marina Spasova, Sara Li�bana-Vi�as, Christina Bran, Yu-Shen Chen, Manuel Vazquez, Michael Farle, Ulf Wiedwald
Nanotechnology 28, 295402 (2017) DOI: 10.1088/1361-6528/aa77b7
79 - Enhanced spin-orbit coupling in tetragonally strained Fe-Co-B films
R. Salikhov, L. Reichel, B. Zingsem, R. Abrudan, A. Edstr�m, D. Thonig, J. Rusz, O. Eriksson, L. Schultz, S. F�hler, M. Farle, and U. Wiedwald
J. Phys.: Condens. Matter 29, 275802 (2017) DOI: 10.1088/1361-648X/aa7498
78 - Magnetic properties of nanolaminated (Mo0.5Mn0.5)2GaC MAX phase
R. Salikhov, R. Meshkian, D. Weller, B. Zingsem, D. Spoddig, J. Lu, A. S. Ingason, H. Zhang, J. Rosen, U. Wiedwald, and M. Farle
Journal of Applied Physics 121, 163904 (2017) DOI: 10.1063/1.4982197
77 - Controlling the conductivity of Ti3C2 MXenes by inductively coupled oxygen and hydrogen plasma treatment and humidity
Florian M. R�mer, Ulf Wiedwald, Tanja Strusch, Joseph Halim, Elisa Mayerberger, Michel W. Barsoum and Michael Farle
RSC Advances 7, 13097�13103 (2017) DOI: 10.1039/c6ra27505b
76 - Ultrasmall YIG nanoparticles with high coercivity at low temperature synthesized by laser ablation and fragmentation of pressed powders
Tim Schmitz, Ulf Wiedwald, Carsten Dubs, and Bilal G�kce
ChemPhysChem 18, 1125�1132 (2017) DOI: 10.1002/cphc.201601183
75 - Shell-ferromagnetic precipitation in martensitic off-stoichiometric Ni-Mn-In Heusler alloys produced by temper-annealing under magnetic field
A. �akır, M. Acet, U. Wiedwald, T. Krenke, and M. Farle
Acta Materialia 127, 117-123 (2017) DOI: 10.1016/j.actamat.2017.01.027
74 - Formation Mechanism of Laser-Synthesized Iron-Manganese Alloy Nanoparticles, Manganese Oxide Nanosheets and Nanofibers
Dongshi Zhang, Zheng Ma, Marina Spasova, Anna E. Yelsukova, Suwei Lu, Michael Farle, Ulf Wiedwald, and Bilal G�kce
Particle & Particle Systems Characterization , 1600225 (2017) DOI: 10.1002/ppsc.201600225
2016
73 - Arrangement at the nanoscale: Effect on magnetic particle hyperthermia
E. Myrovali, N. Maniotis, A. Makridis, A. Terzopoulou, V. Ntomprougkidis, K. Simeonidis, D.Sakellari, O. Kalogirou, T. Samaras, R. Salikhov, M. Spasova, M. Farle, U. Wiedwald, and M. Angelakeris
Scientific Reports 6, 37934 (2016) DOI: 10.1038/srep37934
72 - Thin film synthesis and characterization of a chemically ordered magnetic nanolaminate (V,Mn)3GaC2
Q. Tao, R. Salikhov, A. Mockute, J. Lu, M. Farle, U. Wiedwald, and J. Rosen
APL Materials 4, 086109 (2016) DOI: 10.1063/1.4961502
71 - Optimum nanoscale design in ferrite based nanoparticles for magnetic particle hyperthermia
Sara Li�bana-Vi�as, Konstantinos Simeonidis, Ulf Wiedwald, Zi-An Li, Zheng Ma, Eirini Myrovali, Antonis Makridis, Despina Sakellari, G. Vourlias, Marina Spasova, Michael Farle, Makis Angelakeris
RSC Advances 6, 72918 (2016) DOI: 10.1039/C6RA17892H
70 - Enhanced magnetocrystalline anisotropy of Fe30Co70 nanowires by Cu additives and annealing
Ester M. Palmero, Ruslan Salikhov, Ulf Wiedwald, Christina Bran, Marina Spasova, Manuel V�zquez, and Michael Farle
Nanotechnology 27, 365704 (2016) DOI: 10.1088/0957-4484/27/36/365704
69 - Magnetic Switching of Nanoscale Antidot Lattices
Ulf Wiedwald, Joachim Gr�fe, Kristof M. Lebecki, Maxim Skripnik, Felix Haering, Gisela Sch�tz, Paul Ziemann, Eberhard Goering, Ulrich Nowak
Beilstein Journal of Nanotechnology 7, 733�750 (2016) DOI: 10.3762/bjnano.7.65
68 - A versatile large-scale and green process for synthesizing magnetic nanoparticles with tunable magnetic hyperthermia features
K. Simeonidis, S. Li�bana-Vi�as, U. Wiedwald, Z. Ma, Z. Li, M. Spasova, O. Patsia, E. Myrovali, A. Makridis, D. Sakellari, I. Tsiaoussis, G. Vourlias, M. Farle and M. Angelakeris
RSC Advances 6, 53107-53117 (2016) DOI: 10.1039/C6RA09362K
67 - Orientation of FePt nanoparticles on top of a-SiO2/Si(001), MgO(001) and Sapphire(0001): Effect of thermal treatments and influence of substrate & particle size
Martin Schilling, Paul Ziemann, Zaoli Zhang, Johannes Biskupek, Ute Kaiser, and Ulf Wiedwald
Beilstein Journal of Nanotechnology 7, 591�604 (2016) DOI: 10.3762/bjnano.7.52
66 - Geometric control of the magnetization reversal in antidot lattices with perpendicular magnetic anisotropy
Joachim Gr�fe, Markus Weigand, Nick Tr�ger, Gisela Sch�tz, Eberhard J. Goering, Maxim Skripnik, Ulrich Nowak, Felix Haering, Paul Ziemann, and Ulf Wiedwald
Physical Review B 93, 104421-1-9 (2016) DOI: 10.1103/PhysRevB.93.104421
65 - Solvent-surface interactions control the phase structure in laser-generated iron-gold core-shell nanoparticles
Philipp Wagener, Jurij Jakobi, Christoph Rehbock, Venkata Sai Kiran Chakravadhanula, Claas Thede, Ulf Wiedwald, Mathias Bartsch, Lorenz Kienle, Stephan Barcikowski
Scientific Reports 6, 23352 (2016) DOI: 10.1038/srep23352
64 - Tuning the magnetism of ferrite nanoparticles
S. Li�bana-Vi�as, K. Simeonidis, Z.-A. Li, Z. Ma, E. Myrovali, A. Makridis, D. Sakellari, M. Angelakeris, U. Wiedwald, M. Spasova, M. Farle
Journal of Magnetism and Magnetic Materials 415, 20-23 (2016) DOI: 10.1016/j.jmmm.2016.02.098
63 - Combined First-Order Reversal Curve and X-Ray Microscopy Investigation of Magnetisation Reversal Mechanisms in Hexagonal Antidot Lattices
Joachim Gr�fe, Markus Weigand, Claudia Stahl, Nick Tr�ger, Michael Kopp, Gisela Sch�tz, Eberhard J. Goering, Felix Haering, Paul Ziemann, and Ulf Wiedwald
Physical Review B 93, 014406 (2016) DOI: 10.1103/PhysRevB.93.014406
2015
62 - Combined FORC and X-ray microscopy study of magnetisation reversal in antidot lattices
J. Gr�fe, F. Haering, K. Stahl, M. Weigand, M. Skipnik, U. Nowak, P. Ziemann, U. Wiedwald, G. Sch�tz, E. Goering
IEEE Magnetics Conference (INTERMAG) CG-09, 1-2 (2015) DOI: 10.1109/INTMAG.2015.7156878
61 - Magnetic hardening of Fe30Co70 nanowires
S. Li�bana-Vi�as, R. Salikhov, C. Bran, E. M. Palmero, M. V�zquez, B. Arvan, X. Yao, P. Toson, J. Fidler, M. Spasova, U. Wiedwald and M. Farle
Nanotechnology 26, 415704 (2015) DOI: doi:10.1088/0957-4484/26/41/415704
60 - Solid solution magnetic FeNi nanostrand-polymer composites by connecting-coarsening assembly
Stephan Barcikowski, Thomas Baranowski, Yigit Durmus, Ulf Wiedwald and Bilal G�kce
Journal of Materials Chemistry C 3, 10699-10704 (2015) DOI: 10.1039/c5tc02160j
59 - Splenic red pulp macrophages are intrinsically superparamagnetic and contaminate magnetic cell isolates
Lars Franken, Marika Klein, Marina Spasova, Anna Elsukova, Ulf Wiedwald, Meike Welz, Percy Knolle, Michael Farle, Andreas Limmer & Christian Kurts
Scientific Reports 5, 12940 (2015) DOI: 10.1038/srep12940
58 - Perpendicular Magnetisation from In-Plane Fields in Nano-Scaled Antidot Lattices
Joachim Gr�fe, Felix Haering, Thomas Tietze, Patrick Audehm, Markus Weigand, Ulf Wiedwald, Paul Ziemann, Przemysław Gawroński, Gisela Sch�tz, and Eberhard J. Goering
Nanotechnology 26, 225203 (2015) DOI: 10.1088/0957-4484/26/22/225203
57 - Structure-Correlated Exchange Anisotropy in Oxidized Co80Ni20 Nanorods
Sara Li�bana-Vi�as, Ulf Wiedwald, Anna Elsukova, Juliane Perl, Benjamin Zingsem, Anna S. Semisalova, Ver�nica Salgueiri�o, Marina Spasova, and Michael Farle
Chemistry of Materials 27, 4015�4022 (2015) DOI: 10.1021/acs.chemmater.5b00976
56 - Magnetic Anisotropy in the (Cr0.5Mn0.5)2GaC MAX Phase
Ruslan Salikhov, Anna S. Semisalova, Andrejs Petruhins, Arni Sigurdur Ingason, Johanna Rosen, Ulf Wiedwald & Michael Farle
Materials Research Letters 3, 156-160 (2015) DOI: 10.1080/21663831.2015.1036324
55 - Role of developing L1_0 chemical order on the (0 0 1)-texture formation of (Fe_(1−x)Cu_x)Pt films grown on amorphous substrates
Franziska Scheibel, Felix Haering, Paul Ziemann and Ulf Wiedwald
J. Phys. D: Appl. Phys 48, 085001 (2015) DOI: 10.1088/0022-3727/48/8/085001
2014
54 - Bolometer detection of magnetic resonances in nanoscaled objects
I. Rod, R. Meckenstock, H. Z�hres, C. Derricks, F. Mushenok, N. Reckers, P. Kijamnajsuk, U. Wiedwald and M. Farle
Nanotechnology 25, 425302 (2014) DOI: 10.1088/0957-4484/25/42/425302
53 - Single core�shell nanoparticle probes for non-invasive magnetic force microscopy
Tino Uhlig, Ulf Wiedwald, Axel Seidenst�cker, Paul Ziemann, and Lukas M Eng
Nanotechnology 25, 255501 (2014) DOI: 10.1088/0957-4484/25/25/255501
52 - Growth modes and epitaxy of FeAl thin films on a-cut sapphire prepared by pulsed laser and ion beam assisted deposition
Xiang Yao, Ulf Wiedwald, Moritz Trautvetter, and Paul Ziemann
Journal of Applied Physics 115, 023507 (2014) DOI: 10.1063/1.4861377
2013
51 - Switching modes in easy and hard axis magnetic reversal in a self-assembled antidot array
Felix Haering, Ulf Wiedwald, Steffen Nothelfer, Berndt Koslowski, Paul Ziemann, Lorenz Lechner, Andreas Wallucks, Kristof Lebecki, Ulrich Nowak, Joachim Gr�fe, Eberhard Goering and Gisela Sch�tz
Nanotechnology 24, 465709 (2013) DOI: 10.1088/0957-4484/24/46/465709
50 - Exchange bias of Ni nanoparticles embedded in an antiferromagnetic IrMn matrix
Balati Kuerbanjiang, Ulf Wiedwald, Felix Haering, Johannes Biskupek, Ute Kaiser, Paul Ziemann and Ulrich Herr
Nanotechnology 24, 455702 (2013) DOI: 10.1088/0957-4484/24/45/455702
49 - Extending the 3ω method: Thermal conductivity characterization of thin films
Nico Bodenschatz, Andr� Liemert, Sebastian Schnurr, Ulf Wiedwald, and Paul Ziemann
Rev. Sci. Instrum. 84, 084904 (2013) DOI: 10.1063/1.4817582
48 - Structural and thermoelectric properties of TMGa3 (TM = Fe, Co) thin films
Sebastian Schnurr, Ulf Wiedwald, Paul Ziemann, Valeriy Y. Verchenko; and Andrei V. Shevelkov
Beilstein Journal of Nanotechnology 4, 461 (2013) DOI: 10.3762/bjnano.4.54
47 - Super spin-glass state and exchange bias in Fe/CoO hybrid nanostructures
Senoy Thomas, Manuel Uhlig, Ulf Wiedwald, Luyang Han, Paul Ziemann, and Manfred Albrecht
Nanotechnology 24, 155703 (2013) DOI: 10.1088/0957-4484/24/15/155703
46 - Electronic structure and soft-X-ray-induced photoreduction studies of iron-based magnetic polyoxometalates of type {(M)M5}12FeIII30 (M = MoVI, WVI)
Karsten Kuepper, Christine Derks, Christian Taubitz, Manuel Prinz, Lo�c Joly, Jean-Paul Kappler, Andrei Postnikov, Wanli Yang, Tatyana V. Kuznetsova, Ulf Wiedwald, Paul Ziemann and Manfred Neumann
Dalton Trans. 42, 7924 (2013) DOI: 10.1039/C3DT32759K
45 - Geometry-Induced Spin-Ice Structures prepared by Self-organization on the Nanoscale
Felix Haering, Ulf Wiedwald, Thomas H�berle, Luyang Han, Alfred Plettl, Berndt Koslowski, and Paul Ziemann
Nanotechnology 24, 055305 (2013) DOI: 10.1088/0957-4484/24/5/055305
2012
44 - Tuning the properties of magnetic thin films by interaction with periodic nanostructures
Ulf Wiedwald, Felix Haering, Stefan Nau, Carsten Schulze, Herbert Schletter, Denys Makarov, Alfred Plettl, Karsten Kuepper, Manfred Albrecht, Johannes Boneberg, Paul Ziemann
Beilstein J. Nanotechnol. 3, 831 (2012) DOI: 10.3762/bjnano.3.93
43 - Towards quantitative magnetic force microscopy: Theory and experiment
T. H�berle, F. Haering, H. Pfeifer, L. Han, B. Kuerbanjiang, U. Wiedwald, U. Herr, B. Koslowski
New Journal of Physics 14, 043044 (2012) DOI: 10.1088/1367-2630/14/4/043044
42 - Formation of highly ordered alloy nanoparticles based on precursor-filled latex spheres
A. Manzke, A. Plettl, U. Wiedwald, L. Han, P. Ziemann, E. Schreiber, U. Ziener, N. Vogel, C. Weiss, K. Landfester, K. Fauth, J. Biskupek, U. Kaiser
Chemistry of Materials 24, 1048-1054 (2012) DOI: 10.1021/cm203241p
2011
41 - Precise chemical, electronic, and magnetic structure of binuclear complexes studied by means of X-ray spectroscopies and theoretical methods
K. Kuepper, D. Benoit, U. Wiedwald, F. M�gele, A. Meyering, M. Neumann, J.-P. Kappler, L. Joly, S. Weidle, B. Rieger, P. Ziemann
Journal of Physical Chemistry C 115, 25030-25039 (2011) DOI: 10.1021/jp2069804
40 - Nanoscaled alloy formation from self-assembled elemental Co nanoparticles on top of Pt films
L. Han, U. Wiedwald, J. Biskupek, K. Fauth, U. Kaiser, P. Ziemann
Beilstein Journal of Nanotechnology 2, 473-485 (2011) DOI: 10.3762/bjnano.2.51
39 - Effect of large mechanical stress on the magnetic properties of embedded Fe nanoparticles
Srinivasa Saranu, S�ren Selve, Ute Kaiser, Luyang Han, Ulf Wiedwald, Paul Ziemann, and Ulrich Herr
Beilstein J. Nanotechnol. 2, 268 (2011) DOI: 10.3762/bjnano.2.31
38 - Magnetic ground-state and systematic X-ray photoreduction studies of an iron-based star-shaped complex
K. Kuepper, C. Taubitz, D. Taubitz, U. Wiedwald, A. Scheurer, S. Sperner, R. W. Saalfrank, J.-P. Kappler, L. Joly, P. Ziemann, M. Neumann
Journal of Physical Chemistry Letters 2, 1491-1496 (2011) DOI: 10.1021/jz2005013
37 - Thermally driven solid-phase epitaxy of laser-ablated amorphous AlFe films on (0001)-oriented sapphire single crystals
M. Trautvetter, U. Wiedwald, H. Paul, A. Minkow, P. Ziemann,
Applied Physics A: Materials Science and Processing 102, 725-730 (2011) DOI: 10.1007/s00339-010-5972-x
2010
36 - Preparation and characterization of supported magnetic nanoparticles prepared by reverse micelles
U. Wiedwald, L. Han, J. Biskupek, U. Kaiser, P. Ziemann,
Beilstein Journal of Nanotechnology 1, 24-47 (2010) DOI: 10.3762/bjnano.1.5
35 - Preparation, properties and applications of magnetic nanoparticles
U. Wiedwald, P. Ziemann
Beilstein Journal of Nanotechnology 1, 21-23 (2010) DOI: 10.3762/bjnano.1.4
34 - Monodispersed NiO nanoflowers with anomalous magnetic behavior
M-Y.Ge, L. Han, U. Wiedwald, X.-B. Xu, C. Wang, K. Kuepper, P. Ziemann, J.-Z. Jiang
Nanotechnology 21, 425702 (2010) DOI: 10.1088/0957-4484/21/42/425702
33 - Dissolution kinetics of Si into Ge (111) substrate on the nanoscale
Z. Balogh, Z. Erdelyi, D. L. Beke, U. Wiedwald, H. Pfeifer, A. Tschetschetkin, P. Ziemann
Thin Solid Films 519, 952-955 (2010) DOI: 10.1016/j.tsf.2010.08.146
32 - Narrowly size distributed zinc-containing poly(acrylamide) latexes via inverse miniemulsion polymerization
E. Kobitskaya, D. Ekinci, A. Manzke, A. Plettl, U. Wiedwald, P. Ziemann, J. Biskupek, U. Kaiser, U. Ziener, K. Landfester
Macromolecules 43, 3294-3305 (2010) DOI: 10.1021/ma902553a
31 - Identification of magnetic properties of few nm sized FePt crystalline particles by characterizing the intrinsic atom order using aberration corrected S/TEM
J. Biskupek, J. R. Jinschek, U. Wiedwald, M. Bendele, L. Han, P. Ziemann, U. Kaiser
Ultramicroscopy 110, 820-825 (2010) DOI: 10.1016/j.ultramic.2010.02.043
30 - Planar Au/TiO2 model catalysts: Fabrication, characterization and catalytic activity
M. Eyrich, S. Kielbassa, T. Diemant, J. Biskupek, U. Kaiser, U. Wiedwald, P. Ziemann, J. Bansmann
ChemPhysChem 11, 1430-1437 (2010) DOI: 10.1002/cphc.200900942
29 - Fabrication of two-dimensional Au@FePt core-shell nanoparticle arrays by photochemical metal deposition
T. H�rtling, T. Uhlig, A. Seidenst�cker, N. C. Bigall, P. Olk, U. Wiedwald, L. Han, A. Eychm�ller, A. Plettl, P. Ziemann, L. Eng
Applied Physics Letters 96, 183111 (2010) DOI: 10.1063/1.3425670
2009
28 - Two-dimensional assembly of magnetic binuclear complexes: A scanning tunneling microscopy study
F. M�gele, D. Fantauzzi, U. Wiedwald, P. Ziemann, B. Rieger
Langmuir 25, 13606-13613 (2009) DOI: 10.1021/la9019712
27 - Fe oxidation versus Pt segregation in FePt nanoparticles and thin films
L. Han, U. Wiedwald, B. Kuerbanjiang, P. Ziemann,
Nanotechnology 20, 285706 (2009) DOI: 10.1088/0957-4484/20/28/285706
26 - FePt nanorods and nanowires for novel ferrofluids
Z. Wu, H. Dong, A. Chuvilin, U. Wiedwald, L. Han, C. Krill III,
Diffusion and Defect Data Pt.B: Solid State Phenomena 154, 89-94 (2009) DOI: 10.4028/www.scientific.net/SSP.154.89
25 - Synthesis, thermal stability and properties of ZnO 2 nanoparticles
W. Chen, Y. H. Lu, M. Wang, L. Kroner, H. Paul, H.-J. Fecht, J. Bednarcik, K. Stahl, Z. L. Zhang, U. Wiedwald, U. Kaiser, P. Ziemann, T. Kikegawa, C. D. Wu, J. Z. Jiang
Journal of Physical Chemistry C 113, 1320-1324 (2009) DOI: 10.1021/jp808714v
2008
24 - Transition from anomalous kinetics toward Fickian diffusion for Si dissolution into amorphous Ge
Z. Balogh, Z. Erdelyi, D. Beke, G. Langer, A. Csik, H.-G. Boyen, U. Wiedwald, P. Ziemann, A. Portavoce, C. Girardeaux
Applied Physics Letters 92, 134104 (2008) DOI: 10.1063/1.2908220
2007
23 - Structural studies of nanoparticles with an objective-lens Cs-corrected Titan microscope
Z. Zhang, J. Biskupek, U. Kaiser, V. V. Breus, G. U. Nienhaus, U. Wiedwald, L. Han, H.-G. Boyen and P. Ziemann
Microscopy and Microanalysis 13 (Suppl 3), 259 (2007) DOI: 10.1017/S1431927607081299
22 - Controlling the interparticle spacing of Au-salt loaded micelles and Au nanoparticles on flat surfaces
J. Bansmann, S. Kielbassa, H. Hoster, F. Weigl, H.-G. Boyen, U. Wiedwald, P. Ziemann, R. J. Behm
Langmuir 23, 10150-10155 (2007) DOI: 10.1021/la7012304
21 - Magnetic moment of Fe in oxide-free FePt nanoparticles
O. Dmitrieva, M. Spasova, C. Antoniak, M. Acet, G. Dumpich, J. K�stner, M. Farle, K. Fauth, U. Wiedwald, H.-G. Boyen, and P. Ziemann
Phys. Rev. B 76, 064414 (2007) DOI: 10.1103/PhysRevB.76.064414
20 - Nanostructured Pt/GC model electrodes prepared by the deposition of metal-salt-loaded micelles
Y. E. Seidel, R. Lindstrom, Z. Jusys, J. Cai, U. Wiedwald, P. Ziemann, R. J. Behm
Langmuir 23, 5795-5801 (2007) DOI: 10.1021/la063295o
19 - Lowering of the L10 ordering temperature of FePt nanoparticles by He+ ion irradiation
U. Wiedwald, A. Klimmer, B. Kern, L. Han, H.-G. Boyen, P. Ziemann, K. Fauth
Applied Physics Letters 90, 062508 (2007) DOI: 10.1063/1.2472177
18 - The structure of gold nanoparticles on different substrates studied by aberration corrected high resolution transmission electron microscopy
J. Biskupek, U. Kaiser, A. Klimmer, U. Wiedwald, L. Han, P. Ziemann, C. Fix, J. Bansmann, R. J. Behm
Microscopy and Microanalysis 13 (Suppl 3), 266 (2007) DOI: 10.1017/S1431927607081330
17 - A micellar approach to magnetic ultrahigh-density data-storage media: Extending the limits of current colloidal methods
A. Ethirajan, U. Wiedwald, H.-G. Boyen, B. Kern, L. Han, A. Klimmer, F. Weigl, G. K�stle, P. Ziemann, K. Fauth, J. Cai, R. J. Behm, A. Romanyuk, P. Oelhafen, P. Walther, J. Biskupek, U. Kaiser U.,
Advanced Materials 19, 406-410 (2007) DOI: 10.1002/adma.200601759
2006
16 - Enhanced orbital magnetism in Fe50Pt50 nanoparticles
C. Antoniak, J. Lindner, M. Spasova, D. Sudfeld, M. Acet, M. Farle, K. Fauth, U. Wiedwald, H.-G. Boyen, P. Ziemann, F. Wilhelm, A. Rogalev, Shouheng Sun
Phys. Rev. Lett. 97, 117201 (2006) DOI: 10.1103/PhysRevLett.97.117201
15 - Local density of states effects at the metal-molecule interfaces in a molecular device
H.Boyen, P. Ziemann, U. Wiedwald, V. Ivanova, D. Kolb, S. Sakong, A. Gross, A. Romanyuk, M. Büttner, P. Oelhafen,
Nature Materials 5, 394-399 (2006) DOI: 10.1038/nmat1607
2005
14 - Using hysteresis behaviour to determine the anisotropy and interactions in complex self-assembled Co metallic nanoparticle systems
M. Cerchez, U. Wiedwald, M. Farle
J. Magn. Magn. Mater. 290-291 (2005) 161 -164 DOI: 10.1016/j.jmmm.2004.11.172
13 - From Colloidal Co/CoO Core-Shell Nanoparticles to Arrays of Metallic Nanomagnets: Surface Modification by Plasma Processing and its Impact on Magnetic Properties
U. Wiedwald, K. Fauth, M. He�ler, H. -G. Boyen, F. Weigl, M. Hilgendorff, M. Giersig, G. Sch�tz, P. Ziemann and M. Farle
ChemPhysChem 6, 2522 (2005) DOI: 10.1002/cphc.200500148
12 - Magnetic response of nanostructured systems: A ferromagnetic resonance investigation
J. Lindner, U. Wiedwald, K. Baberschke, M. Farle
J. Vac. Sci. Technol. A 23, 796 (2005) www
11 - Effect of an oxidic overlayer on the magnetism of Co nanoparticles
U. Wiedwald, J. Lindner, M. Spasova, Z. Frait, M. Farle
Phase. Trans. 78, 85 (2005) www
2004
10 - Effective exchange interaction in a quasi-two-dimensional self-assembled nanoparticle array
U. Wiedwald, M. Cerchez, M. Farle, K. Fauth, G. Sch�tz, K. Z�rn, H. -G. Boyen, and P. Ziemann
Phys. Rev. B 70 (2004) 214412 www
9 - Temperature dependence of exchange anisotropy in monodisperse cobalt nanoparticles with a cobalt oxide shell
M. Spasova, U. Wiedwald, M. Farle, T. Radetic, U. Dahmen, M. Hilgendorff and M. Giersig
J. Magn. Magn. Mater. 272-276, 1508-1509 (2004) www
8 - Composition-dependent ratio of orbital-to-spin magnetic moment in structurally disordered FexPt1-x nanoparticles
M. Ulmeanu, C. Antoniak, U. Wiedwald, M. Farle, Z. Frait, and S. Sun
Phys. Rev. B 69, 054417 (2004) DOI: 10.1103/PhysRevB.69.054417
7 - Local structure of monodisperse Co nanoparticles
A. Fraile Rodríguez, N. S. Sobal, U. Wiedwald, M. Spasova, M. Hilgendorff, M. Giersig, M. Farle and D. Arvanitis
J. Magn. Magn. Mater. 272-276, E1207-E1209 (2004)
6 - Frequency- and temperature-dependent Ferromagnetic Resonance of Co/CoO core-shell nanoparticles
U. Wiedwald, J. Lindner, M. Spasova, Z. Frait, M. Hilgendorff, M. Giersig, M. Farle
Mat. Res. Soc. Symp. Proc. 818, M1.5.1 (2004) www
2003
5 - Ratio of orbital-to-spin magnetic moment in Co core-shell nanoparticles
U. Wiedwald, M. Spasova, E. L. Salabas, M. Ulmeanu, M. Farle, Z. Frait, A. Fraile Rodriguez, D. Arvanitis, N. S. Sobal, M. Hilgendorff, and M. Giersig
Phys. Rev. B 68, 064424 (2003) www
2002
4 - Structure and Magnetism of Co and CoAg Nanocrystals,
M. Spasova, T. Radetic, N. S. Sobal, M. Hilgendorff, U. Wiedwald, M. Farle, M. Giersig, U. Dahmen,
Mat. Res. Soc. Symp. Proc. 721 (2002) 195 – 200 www
3 - Magnetic properties of arrays of interacting Co nanocrystals
M. Spasova, U. Wiedwald, R. Ramchal, M. Farle, M. Hilgendorff, M. Giersig
J. Magn. Magn. Mater. 240 (2002) 40-43 www
2001
2 - Magnetization and Magnetic Anisotropy of Co/W Multilayers
M. Spasova, U. Wiedwald, R. Ramchal, M. Farle, S. Luby, E. Majkova, R. Senderak
Phys. Stat. Sol. (b) 225 (2001) 449-457 www
1 - Ferromagnetic Resonance of monodisperse Co Particles
U. Wiedwald, M. Spasova, M. Farle, M. Hilgendorff and M. Giersig
J. Vac. Sci. Technol. 19 (2001) 1773 www