DC Magnetometer & AC Susceptometer, based on a MagLab-EXA 2000 multi-measurement system (Oxford Instruments) offers high resolving power in deciphering static and dynamic phenomena in low-moment, correlated electron systems of either bulk or nanoscale forms.

Applications:

Invaluable insights on the physical property materials response by measuring the moment versus applied magnetic field (e.g. hysteresis loops) or moment versus temperature, for deciphering static and dynamic phenomena associated with magnetic and superconducting materials. Its sensitivity is very high, therefore a small amount of sample is enough to ensure reliable signals. Automated measurements allow precise determination of the charasteristics of the superconducting state (e.g. crticial temperature, Meissner effect etc), as well as those of the Curie, Néel, and spin-glass states, including parameters such as the blocking or freezing temperatures of ferromagnetic, antiferromagnetic, superparamagnetic systems.

Specifications:

(a) High magnetic field (H= 0-7 Tesla), (b) Low-temperature liquid Helium cryostat (T= 1.8-350 K), (c) DC moment extraction (~10-4 emu), (d) AC susceptibility (~10-6 emu), f= 0.01-10 kHz, (e) samples of a few milligrams, can be accomodated in diverse morphologies, ranging from films and (nano)crystals to bulk forms – typical container, gelatin capsule ~15 mm long, with O.D. ~5 mm. The software measurement sequencer (open source) provides a set of high level actions to enable you to write and control measurements in a way that suit your own specific requirements.