MEASUREMENT OF ANISOTROPY ENERGY FOR MAGNETOOPTICAL MEDIA

被引:6
作者
HAJJAR, RA
WU, TH
MANSURIPUR, M
机构
[1] Optical Sciences Center, University of Arizona, Tucson
关键词
D O I
10.1063/1.351299
中图分类号
O59 [应用物理学];
学科分类号
摘要
A technique is proposed for measuring the anisotropy energy of magneto-optical media, the technique consists of rotating a sample in a fixed external magnetic field and monitoring the extraordinary Hall effect signal of the sample. From the Hall effect signal, the angle of rotation of the sample, and the saturation magnetization of the sample (which is measured separately by a vibrating sample magnetometer), we obtain the anisotropy energy as a function of the deviation of magnetization from the easy axis. The technique is applied to multilayered Co/Pd and Co/Pt films as well as to amorphous rare-earth transition metal TbFeCo alloy films. The anisotropy constants thus obtained are compared with those obtained using other techniques such as torque magnetometry and Hall effect (or Kerr effect) measurements with applied field in the plane of the sample.
引用
收藏
页码:813 / 820
页数:8
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