Abstract

Al nuclear magnetization has been measured in magnetic fields up to 100 kOe , by use of a capacitive Faraday magnetometer installed in a dilution refrigerator. The sample employed was an Al 0.98Si 0.02 alloy prepared from high purity (6N) elements. The Si doping was essential in suppressing the de Haas-van Alphen oscillations of conduction electrons. Fine Curie's law was observed at temperatures below 3 K down to ∼60 mK , in several magnetic fields in the range 30– 100 kOe . The measurement opens a new route towards primary thermometry at low temperature and high magnetic field region.

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