PPMS DynaCool

The facility can be found in room LN 2.46 in the NETZ building (extension -8136), with our group mainly using it for VSM measurements. Standard procedures include the field and temperature-dependent determination of sample magnetization, usually through the recording of M(H) hysteresis and M(T) ZFC-FC curves. Independent of the installed measurement option, the device is equipped with a temperature controller, allowing the sample temperature to be set between 1.8 and 400 K. A superconducting magnet allows fields up to +/- 9 T to be set.

The machine is built as a closed-cycle system, being able to generate the liquid helium needed for operation via a pulse tube cooler, thus being independent of shortages and capable of continuous uninterrupted service.

The device is equipped with a large number of options for a variety of measurement methods:

• DC Resistivity Option for the measurement of electrical resistance
• Electrical Transport Option (ETO) for the measurement of AC electrical resistance and the Hall effect
• Thermal Transport Option (TTO) for the measurement of thermal conductance and the Seebeck effect
• Heat Capacity Option (HC) for heat capacity measurements
• VSM Option for vibrating sample magnetometry measurements down to 10^-6 emu
• VSM Oven for high-temperature measurements at up to 1000 K
• VSM Large Bore Option for larger samples of up to 10 mm width
• VSM High-Pressure Cell for measurements under in situ pressure application up to 1.3 GPa
• Fiber Optic Sample Holder for VSM measurements under in situ irradiation
• ACMSII Option for AC-susceptometry measurements