High-performance CoPtCrO perpendicular media: optimizing exchange coupling and anisotropy orientation dispersion

被引：39

作者：

Choe, G ^{[1
]}

Zheng, A ^{[1
]}

Abarra, EN ^{[1
]}

Demczyk, BG ^{[1
]}

Zhou, JN ^{[1
]}

Acharya, BR ^{[1
]}

Johnson, KE ^{[1
]}

机构：

[1] MMC Technol, San Jose, CA 95131 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 287卷

关键词：

perpendicular media; CoPtCrO; exchange coupling; anisotropy dispersion; media noise;

D O I：

10.1016/j.jmmm.2004.10.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A systematic investigation of the structural, magnetic, and recording properties of CoPtCrO media with different intergranular exchange coupling and anisotropy orientation dispersion is performed. Reduced exchange coupling between grains results in lower media transition jitter and nonlinear transition shift. By narrowing the Co anisotropy orientation dispersion, a substantial reduction of both transition and DC noise is achieved. Media with high squareness, coercivity, nucleation field, low exchange and narrow Co c-axis dispersion have been fabricated. Such media exhibit excellent recording performance and are promising for high-density perpendicular recording. (C) 2004 Elsevier B.V. All rights reserved.

引用

收藏

页码：159 / 166

页数：8

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