FARADAY FORCE MAGNETOMETER FOR HIGH-SENSITIVITY MAGNETIZATION MEASUREMENTS AT VERY-LOW TEMPERATURES AND HIGH FIELDS
FARADAY FORCE MAGNETOMETER FOR HIGH-SENSITIVITY MAGNETIZATION MEASUREMENTS AT VERY-LOW TEMPERATURES AND HIGH FIELDS
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DOI：
10.1143/jjap.33.5067
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发表时间：
1994-09-01
期刊：
影响因子：
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通讯作者：
AMITSUKA, H
中科院分区：
文献类型：
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作者：
SAKAKIBARA, T;MITAMURA, H;AMITSUKA, H
研制了一种法拉第磁力仪，可在低至100 mK的极低温度和高达9 T的磁场下进行静态磁化测量。采用一种新型的负载敏感可变电容器检测稀释制冷机绝热真空室中试样所受的磁力。使用带有梯度线圈的超导磁体可以精确测量磁矩，分辨率优于1 x 10（-7）A.m（2）（1 x 10（-4）emu）。介绍了重电子反铁磁体CeB 6的磁化强度测量的应用。
A Faraday force magnetometer has been developed for static magnetization measurements at very low temperatures down to 100 mK and in fields up to 9 T. The magnetic force acting on a specimen located in the adiabatic vacuum chamber of a dilution refrigerator is detected by a newly designed load-sensing variable capacitor. Use of a superconducting magnet with gradient coils enables accurate measurement of magnetic moment with a resolution of better than 1 x 10(-7) A.m(2) (1 x 10(-4) emu). An application to magnetization measurements on the heavy-electron antiferromagnet CeB6 is presented.