MAGNETIC ANISOTROPY AND MAGNETO-OPTIC KERR SPECTRA OF AMORPHOUS Ho-Co THIN FILMS.

被引：0

作者：

Lu, Mu ^{[1
]}

Choe, Young-joon ^{[1
]}

Tsunashima, Shigeru ^{[1
]}

Uchiyama, Susumu ^{[1
]}

机构：

[1] Nanjing Univ, Nanjing, China, Nanjing Univ, Nanjing, China

来源：

Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes | 1987年 / 26卷 / 07期

关键词：

FILMS - Sputtering - HOLMIUM COBALT ALLOYS - Anisotropy - MAGNETOOPTICAL EFFECTS - Measurements;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The substrate bias dependence of the uniaxial anisotropy Ku in sputtered Ho//xCo//1// minus //x films has been studied in the bias voltage range 0 to minus 100 v. K//u is almost constant in the V//b range 0 approximately minus 50 v and increases abruptly above minus 50 v, as in the case of Tb-Co. The increment of K//u between minus 50 and minus 100 v in Ho-Co is about one third of that of Tb-Co; this can be understood under the assumption that K//u originates from an anisotropic 4f electron cloud. The magneto-optic Kerr spectra of Ho-Co films prepared by co-evaporation have also been measured in the wavelength range 250 to 700 nm. In the short-wavelength region, the Kerr rotation of Ho-Co decreases with decreasing wavelength and approaches zero more rapidly than in the case of Y-Co. This is considered to be due to a negative contribution of Ho to the Kerr rotation of Ho-Co.

引用

页码：1073 / 1076