STUDY OF CO-CR FILMS FOR PERPENDICULAR MAGNETIC RECORDING USING NUCLEAR-MAGNETIC-RESONANCE

被引：33

作者：

YOSHIDA, K

KAKIBAYASHI, H

YASUOKA, H

机构：

[1] Central Research Laboratory, Hitachi Ltd., Kokubunji

来源：

JOURNAL OF APPLIED PHYSICS | 1990年 / 68卷 / 02期

关键词：

D O I：

10.1063/1.346802

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A 59Co nuclear magnetic resonance measurement and a transmission electron microscope observation are utilized to investigate the compositional distribution of Co-Cr films with and without heat treatment. The spin-echo spectra of evaporated films are found to be entirely different from those of Co-Cr alloy powders. The spectra of films comprise a very complicated hyperfine field distribution and the resonant frequencies are much higher than those of powder samples, implying the existence of various kinds of segregation regions typical of a film. Chrysanthemumlike patterns, which disappear with heat treatment, are also observed for chemically etched films. This disappearance is accompanied by the disappearance of the highest-frequency resonant line.

引用

页码：705 / 712

页数：8

共 15 条

[1]

BOZORTH RM, 1956, FRROMAGNETISM, P289

[2] MICROSTRUCTURE AND MAGNETIC-PROPERTIES OF COCR THIN-FILMS FORMED ON GE LAYER [J].