INSTRUMENT FOR HIGH RESOLUTION MAGNETIZATION MEASUREMENTS AT HIGH PRESSURES, HIGH MAGNETIC FIELDS AND LOW TEMPERATURES
INSTRUMENT FOR HIGH RESOLUTION MAGNETIZATION MEASUREMENTS AT HIGH PRESSURES, HIGH MAGNETIC FIELDS AND LOW TEMPERATURES
复制标题
用于在高压、高磁场和低温下进行高分辨率磁化测量的仪器
DOI：
10.1063/1.1149048
复制
发表时间：
1998
影响因子：
1.6
通讯作者：
T. Gotō
中科院分区：
文献类型：
--
作者：
K. Koyama;S. Hane;K. Kamishima;T. Gotō
首次研制了一种在高压、强磁场和低温条件下进行高分辨率磁化强度测量的仪器。该仪器由抽取式磁强计、无磁高压夹持器和20T超导磁体和3He制冷机组成，能够精确测量弱磁性材料的磁化强度。采用钛含量为3wt %的TiCu合金作为高压夹具的非磁性材料，具有较高的机械强度。该装置适用于压力范围为0.002⩽P⩽13kbar，场强范围为0⩽H⩽200kOe，温度范围为0.5⩽T⩽4.2K，分辨率为±0.002 emu。为了验证该仪器的性能，给出了重费米子反铁磁体Ce7Ni3的实验结果。
An instrument has been developed for the first time that makes high resolution magnetization measurements at high pressures, high magnetic fields and low temperatures. The instrument consists of an extraction-type magnetometer, a nonmagnetic high pressure clamp cell and a 20 T superconducting magnet with a 3He refrigerator and is able to precisely measure the magnetization of weakly magnetic materials. TiCu alloy with 3 wt % Ti is employed as a nonmagnetic material with high mechanical strength for the high pressure clamp cell. This apparatus can be used in the pressure range 0⩽P⩽13 kbar, the field range 0⩽H⩽200 kOe and the temperature range 0.5⩽T⩽4.2 K. The resolution of the instrument is estimated to be ±0.002 emu. For demonstrating the ability of the instrument, the experimental results on a heavy fermion antiferromagnet Ce7Ni3 is presented.