用转矩仪测量薄膜磁各向异性的研究

Study for Measuring the Magnetic Anisotropy of Thin Films with the Torquemeter

本文讨论由转矩仪测量薄膜材料磁各向异性的一个新方法。当单轴各向异性膜材料的本征易轴随机取向与膜平面的夹角为α时，通过测量本征易轴和形状各向异性易轴合成的表观易轴的取向（与膜平面间的夹角）以及常数值，就可以计算得到膜材料的本征磁各向异性常数和易轴的空间取向。

A new method for measuring the magnetic anisotropy of thin films with a torque-meter is introduced. The film has an uniaxial anisotropy with a single easy axis making an angle α from the film plane. Intrinsic easy axis and anisotropy constant Ku are measured by means of the apparent easy axis and constant K,here K is consisted of intrinsic and shape anisotropy.