OXYGEN EFFECT ON THE MICROSTRUCTURE AND MAGNETIC-PROPERTIES OF BINARY COPT THIN-FILMS FOR PERPENDICULAR RECORDING

被引：22

作者：

HIKOSAKA, T

KOMAI, T

TANAKA, Y

机构：

[1] Communication and Information Systems Research Laboratories, TOSHIBA R&D Center I Komukai, Saiwai-ku

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1994年 / 30卷 / 06期

关键词：

D O I：

10.1109/20.333978

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents the effect of oxygen on the microstructure of Co - 18 at. % Pt perpendicular medium. Oxygen addition to the CoPt films during high Ar pressure (4 Pa) sputtering successfully increased the perpendicular coercivity. 188 kA/m coercivity and 1.2 tesla (T) saturation magnetization were obtained. The perpendicular anisotropy energy was at least 570 kJ/m(3). ABM and EDX measurements revealed that the film was composed of crystal grains and amorphous boundaries and that oxygen segregated clearly inside the amorphous boundaries. A TEM image showed a 10 nm grain diameter independent of the oxygen partial pressure. For CoPt films deposited under a lower Ar pressure (2 Pa), oxygen has been found to exist uniformly within the gains and boundaries and showed no significant effect on coercivity.

引用

页码：4026 / 4028

页数：3

共 5 条

[1] A STUDY ON MAGNETIZATION REVERSAL MECHANISMS OF COCR FILMS [J].