| Publikationsliste von Dr. Tom Kammermeier |
| 2012 |
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25 - Structural and magnetic analysis of epitaxial films of Gd-doped ZnO
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V. Ney, S. Ye, T. Kammermeier, K. Ollefs, F. Wilhelm, A. Rogalev, S. Lebgue, A. L. da Rosa, and A. Ney
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Phys. Rev. B 85, 235203 (2012) DOI: 10.1103/PhysRevB.85.235203
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24 - Effects of the Inhomogenous Co Doping on the Magnetoresistance of Zn1−xCoxO Epitaxial Films
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S. Ye, L. Klar, A. Ney, V. Ney, T. Kammermeier, K. Ollefs, F. Liu and G. Wang
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Journal of Nanoscience and Nanotechnology 2, 1054 (2012) DOI: 10.1166/jnn.2012.4266
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| 2011 |
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23 - Structural, chemical and magnetic properties of secondary phases in Co-doped ZnO
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A. Ney, A. Kovcs, V. Ney, S. Ye, K. Ollefs, T. Kammermeier, F. Wilhelm, A. Rogalev and R. E. Dunin-Borkowski
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New J. Phys. 13, 103001 (2011) DOI: 10.1088/1367-2630/13/10/103001
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| 2010 |
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22 - Co-Doped ZnO Epitaxial Films: From a Brillouin-Like Paramagnet to a Phase-Separated Superparamagnetic Ensemble
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V. Ney, S. Ye, K. Ollefs, T. Kammermeier, F. Wilhelm, A. Rogalev, and A. Ney
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J. Nanosci. Nanotechnol. 10, 5958 (2010) DOI: 10.1166/jnn.2010.2590
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21 - Magnetism of Co doped ZnO with Al codoping: Carrier-induced mechanisms versus extrinsic origins
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A. Ney, V. Ney, S. Ye, K. Ollefs, T. Kammermeier, T. C. Kaspar, S. A. Chambers, F. Wilhelm and A. Rogalev
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Phys. Rev. B 82, 041202(R) (2010) DOI: 10.1103/PhysRevB.82.041202
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20 - Influence of the developing magnetic order on the transport properties of epitaxial Zn1-xCoxO films
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S. Ye, V. Ney, T. Kammermeier, K. Ollefs, S. Zhou, H. Schmidt, A. Ney
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J. Phys.: Conference Series 200, 052034 (2010) DOI: 10.1088/1742-6596/200/5/052034
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19 - Anisotropic paramagnetism of Co-doped ZnO epitaxial films
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A. Ney, T. Kammermeier, K. Ollefs, S. Ye, V. Ney, T. C. Kaspar, S. A. Chambers, F. Wilhelm and A. Rogalev
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Phys. Rev. B 81, 054420 (2010) DOI: 10.1103/PhysRevB.81.054420
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18 - Advanced spectroscopic synchrotron techniques to unravel the intrinsic properties of dilute magnetic oxides: the case of Co:ZnO
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A. Ney, M. Opel, T. C. Kaspar, V. Ney, S. Ye, K. Ollefs, T. Kammermeier, S. Bauer, K.-W. Nielsen, S. T. B. Goennenwein, M. H. Engelhard, S. Zhou, K. Potzger, J. Simon, W. Mader, S. M. Heald, J. C. Cezar, F. Wilhelm, A. Rogalev, R. Gross and S. A. Chambers
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New J. Phys. 12, 013020 (2010) DOI: 10.1088/1367-2630/12/1/013020
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17 - Tuning the magnetic properties of Zn1-xCoxO films
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V. Ney, S. Ye, T. Kammermeier, K. Ollefs, A. Ney, T.C. Kaspar, S.A. Chambers, F. Wilhelm and A. Rogalev
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J. Magn. Magn. Mater. 322, 1232 (2010) DOI: 10.1016/j.jmmm.2009.04.024
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16 - Gd-doped GaN studied with element specifity: very small polarization of Ga, paramagnetism of Gd and the formation of magnetic clusters
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A. Ney, T. Kammermeier, K. Ollefs, V. Ney, S. Ye, S. Dhar, K. H. Ploog, M. Rver, J. Malindretos, A. Rizzi, F. Wilhelm, A. Rogalev
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J. Magn. Magn. Mater. 322, 1162 (2010) DOI: 10.1016/j.jmmm.2009.06.033
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15 - Observation of the Onset of Magnetic Clustering in Superparamagnetic Zn1-xCoxO Films
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S. Ye, V. Ney , T. Kammermeier, K. Ollefs, A. Ney, F. Wilhelm and A. Rogalev
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J. Supercond. Nov. Magn. 23, 91 (2010) DOI: 10.1007/s10948-009-0566-6
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| 2009 |
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14 - Absence of ferromagnetic-transport signatures in epitaxial paramagnetic and superparamagnetic Zn0.95Co0.05O films
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S. Ye, V. Ney, T. Kammermeier, K. Ollefs, S. Zhou, H. Schmidt, F. Wilhelm, A. Rogalev, and A. Ney
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Phys. Rev. B 80, 245321 (2009) DOI: 10.1103/PhysRevB.80.245321
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13 - Nonferromagnetic nanocrystalline ZnO:Co thin films doped with Zn interstitials
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Christoph Knies, Matthias T. Elm, Peter J. Klar, Jan Stehr, Detlev M. Hofmann, Nikolai Romanov, Tom Kammermeier, and Andreas Ney
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J Appl. Phys. 105, 073918 (2009) DOI: 10.1063/1.3095469
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12 - Element specific measurements of the structural properties and magnetism of CoxZn1-xO
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T. Kammermeier, V. Ney, S. Ye, K. Ollefs, T. C. Kaspar, S. A. Chambers, F.Wilhelm, A. Rogalev, and A. Ney
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J. Magn. Magn. Mater. 321, 699 (2009) DOI: 10.1016/j.jmmm.2008.11.028
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| 2008 |
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11 - Structural, Magnetic and Optical Properties of Co- and Gd-implanted ZnO(0001) substrates
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V. Ney, S. Ye, T. Kammermeier, A. Ney, H. Zhou, J. Fallert, H. Kalt, F.-Y. Lo, A. Melnikov, and A. D. Wieck
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J. Appl. Phys. 104, 083904 (2008) DOI: 10.1063/1.3000452
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10 - Metastable magnetism and memory effects in dilute magnetic semiconductors
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A. Ney, R. Rajaram, T. Kammermeier, V. Ney, S. Dhar, K. H. Ploog and S. S. P. Parkin
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J. Phys.: Condens. Matter 20, 285222 (2008) DOI: 10.1088/0953-8984/20/28/285222
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9 - Limitations of measuring small magnetic signals of samples deposited on a diamagnetic substrate
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A. Ney, T. Kammermeier, V. Ney, K. Ollefs, and S. Ye
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J. Magn. Magn. Mater. 320, 3341 (2008) DOI: 10.1016/j.jmmm.2008.07.008
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8 - Element specific magnetic properties of Gd:GaN: very small polarization of Ga and paramagnetism of Gd
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A. Ney, T. Kammermeier, V. Ney, S. Ye, K. Ollefs, E. Manuel, S. Dhar, K. H. Ploog, E. Arenholz, F. Wilhelm, and A. Rogalev
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Phys. Rev. B 77, 233308 (2008) DOI: 10.1103/PhysRevB.77.233308
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7 - Paramagnetic and ferromagnetic resonance studies on dilute magnetic semiconductors based on GaN
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T. Kammermeier, S. Dhar , V. Ney, E. Manuel, A. Ney, K. H. Ploog, F.-Y. Lo, A. Melnikov, A. D. Wieck
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phys. stat. sol. (a) 205 (8), 1872 (2008) DOI: 10.1002/pssa.200824023
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6 - Absence of intrinsic ferromagnetic interactions of isolated and paired Co dopant atoms in Zn1-xCoxO with high structural perfection
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A. Ney, K. Ollefs, S. Ye, T. Kammermeier, V. Ney, T. C. Kaspar, S. A. Chambers, F. Wilhelm, and A. Rogalev
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Phys. Rev. Lett. 100, 157201 (2008) DOI: 10.1103/PhysRevLett.100.157201
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| 2007 |
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5 - Experimental investigation of the metastable magnetic properties of Cr-doped InN
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A. Ney, R. Rajaram, S.S.P. Parkin, T. Kammermeier, S. Dhar
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Phys. Rev. B 76, 035205 (2007) DOI: 10.1103/PhysRevB.76.035205
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4 - Magnetic and structural properties of Gd-implanted zinc-blende GaN
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F.-Y. Lo, A. Melnikov, D. Reuter, A. D. Wieck, V. Ney, T. Kammermeier, A. Ney, J. Schrmann, S. Potthast, D. J. As, and K. Lischka
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Appl. Phys. Lett. 90, 262505 (2007) DOI: 10.1063/1.2753113
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3 - Element specific investigations of the structural and magnetic properties of Gd:GaN
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A. Ney, T. Kammermeier, E. Manuel, V. Ney, S. Dhar, K.H. Ploog, F. Wilhelm, and A. Rogalev
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Appl. Phys. Lett. 90, 252515 (2007) DOI: 10.1063/1.2750542
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| 2006 |
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2 - Magnetic properties of epitaxial CrN films
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A. Ney, R. Rajaram, S. S. P. Parkin, T. Kammermeier, S. Dhar
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Appl. Phys. Lett. 89, 112504 (2006) DOI: 10.1063/1.2352795
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1 - Ferromagnetism and colossal magnetic moment in Gd-focused ion-beam-implanted GaN
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S. Dhar, T. Kammermeier, A. Ney, L. Perez, K. H. Ploog, A. Melnikov, and A. D. Wieck
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Appl. Phys. Lett. 89, 062503 (2006) DOI: 10.1063/1.2267900
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