Precise Magnetization Measurements by Parallel Self-Compensated Induction Coils in a Vertical Single-Turn Coil up to 103 T
Precise Magnetization Measurements by Parallel Self-Compensated Induction Coils in a Vertical Single-Turn Coil up to 103 T
复制标题
通过垂直单匝线圈（高达 103 T）中的并联自补偿感应线圈进行精确磁化测量
DOI：
10.1143/jpsj.81.014702
复制
发表时间：
2012
影响因子：
1.7
通讯作者：
M.Tokunaga
中科院分区：
文献类型：
--
作者：
S.Takeyama;R.Sakakura;Y.H.Matsuda;A.Miyata;M.Tokunaga
我们开发了一种用于垂直对准的单圈线圈的磁化测量技术。在不使用辅助线圈信号混频的电子补偿电路的情况下，通过并联双拾取线圈的自补偿，获得了高达10-4数量级的补偿比。采用了高性能低温技术和液氦容器，该容器也是为适应该系统而制造的。在室温下测量了锰氧化物Bi0.5Ca0.5MnO_3的强磁场磁化强度，在很低的温度下测量了几何受挫的尖晶石氧化物CdCr2O4的磁化强度。不仅是过渡场，而且磁化绝对值也被证明在103T以下的磁场中通过14 mm内径单圈线圈的精度在3%以内。
We have developed a magnetization measurement technique for use in a vertically aligned single-turn coil. Compensation ratios of an order as high as 10-4were achieved by self-compensation in parallel twin-pickup coils without using the electronic compensation circuit mixing of the signal from an auxiliary coil. High performance cryogenics was employed with a liquid Helium container that was also manufactured to fit the system. The high-magnetic-field magnetization measurements were applied to a manganite Bi0.5Ca0.5MnO3at room temperature, and also to a geometrically frustrated spinel oxide, CdCr2O4at very low temperatures. Not only the transition field, but also the absolute value of the magnetization was shown to be evaluated within a 3% degree of accuracy in magnetic fields of up to 103 T by means of a 14-mm inner-diameter single-turn coil.