Gyroscopic g factor of rare earth metals
Gyroscopic g factor of rare earth metals
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DOI：
10.1063/1.4976998
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发表时间：
2017-02-13
影响因子：
4
通讯作者：
Saitoh, E.
中科院分区：
文献类型：
--
作者：
Ogata, Y.;Chudo, H.;Saitoh, E.
我们开发了用于观察巴尼特效应的原位磁化测量装置，该装置由磁通门传感器、频率高达 1.5 kHz 的高速转子和室温磁屏蔽组成。样品中因旋转而产生的有效磁场（巴尼特场）会磁化样品，并且与旋转频率成正比。根据 Barnett 场旋转依赖性的斜率，稀土金属（特别是 Gd、Tb 和 Dy）的陀螺 g 因子 g' 估计分别为 2.00 +/- 0.08、1.53 +/- 0.17 和 1.15 +/- 0.32。这项研究提供了一种确定 g' 因子的技术，即使在光谱方法可能不可用的样品中也是如此。由 AIP 出版社出版。
We develop the in situ magnetization measurement apparatus for observing the Barnett effect consisting of a fluxgate sensor, a high speed rotor with frequencies of up to 1.5 kHz, and a magnetic shield at room temperature. The effective magnetic field (Barnett field) in a sample arising from rotation magnetizes the sample and is proportional to the rotational frequency. The gyroscopic g factor, g', of rare earth metals, in particular, Gd, Tb, and Dy, was estimated to be 2.00 +/- 0.08, 1.53 +/- 0.17, and 1.15 +/- 0.32, respectively, from the slopes of the rotation dependence of the Barnett field. This study provides a technique to determine the g' factor even in samples where the spectroscopic method may not be available. Published by AIP Publishing.