Compensated Coil Magnetometer.
| FEATURES | MEGAGAUSS - TOULOUSE | DRESDEN | TOULOUSE |
|---|---|---|---|
| Local Contact | Oleksiy Drachenko |
Yurii SKOURSKI |
William KNAFO |
| Field range | 0 ... 150 T | 0 ... 85 T | 0 ... 70 T |
| Temperature range | 4 ... 300 K | 1.4 – 270 K³He option with a base temperature of ~0.4 K is available for magnets A, B, E | 1.5 K ... 300 K |
| Sample size | Typically, needle-shaped single crystal sample with < 1 mm diameter, 2 mm length (Powder sample is also fine) (Metallic sample gets a strong effect of eddy currents) | > 1 mm holders are provided in order to mount samples in a defined orientation | sample should fit in a 1.4 mm tube, typical sample height = 4 mm, typical mass = 20-40 mg |
| Typical experiment | sweep rates (typical) 300 T/μsec Adiabatic magnetisation | Magnetisation M (B)
Raise time 7- 40 ms.
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| Sensitivity | Down to 10-6 J/T (10-3 emu) net magnetic moment. The sensitivity depends on the shape of the magnetization curve. | suffers from noise since 2012, sensitivity is ok for fields below 40 T, but poor for higher fields, new prototypes are under development | |
| Sample Holder | 
Sample holder with typical sample inside Sample is mounted into a kapton tube |
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| Sample environment | Gaseous helium from 300K down to 4K | Gaseous helium from 270K down to 4K, liquid helium below | |
| Examples | Frustrated magnets A. Miyata et al., Phys. Rev. B, 87 214424 (2013) S. Takeyama et al., J. Phys. Soc. Jpn., 81 014702 (2012) | 
Ultra-robust high-field magnetization plateau in
bond-frustrated MnCr2S4 [2].
Y. Skourski et al., Physical Review B 83 214420 (2011)
Tsurkan et al., Sci. Adv. 3, e1601982 (2017) |
Heavy Fermions W. Knafo et al., Nature Comm., 7, 13075 (2016) K. Kuwahara et al., Phys. Rev. Lett. 110, 216406 (2013) |