MPMS XL Magnetometer from Quantum Design (USA); 2012
The most sensitive magnetometer, in which changes of the magnetic flux are measured with the Superconducting Quantum Interference Device (SQUID); equipped with the auxiliary probes for investigating changes in magnetic properties induced by light or external pressure, as well as the electric conductivity probe for the magnetoresistance measurements. The instrument is filled with liquid helium from the transport dewar. Thanks to perfect sensitivity, weak magnets and very small smaples, including the nano-sized ones, may be investigated.
Temperature range | 1.9 - 400 K (+ oven up to 800 K) |
Temperature accuracy | ±1 % |
Magnetic field range | ±7 T |
Field setting resolution | 0.5 G (to 5000 G), 2 G to 7 T |
Field uniformity | 0.01 % over 4 cm |
Residual field | < 5 G (Oscillation mode)
< 30 G (No-overshoot mode) |
DC sensitivity | < 10-8 emu = 10-11 J/T (to 2000 G)
< 6*10-7 emu (to 7 T) |
Range of measurement | ± 5 emu |
AC susceptibility measurement | 0.1 Hz - 1 kHz, sensitivity 10-8 emu |
AC field amplitude | 0.01 Oe - 3.9 Oe |
Additional equipment | Light fiber optic probe (UV-Vis)
High pressure cell probe Electric conductivity measurement set-up |
SQUID magnetometer is the most sensitive device for measuring magnetic properties of materials. It is used for research on molecular magnets, nanoparticles, metallic thin films for spintronics, intermetallic compounds, superconductors and multiferroics. Measurement possibilities: