Role of oxygen incorporation in Co-Cr-Pt-Si-O perpendicular magnetic recording media

被引：53

作者：

Zheng, M ^{[1
]}

Acharya, BR ^{[1
]}

Choe, G ^{[1
]}

Zhou, JN ^{[1
]}

Yang, ZD ^{[1
]}

Abarra, EN ^{[1
]}

Johnson, KE ^{[1
]}

机构：

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

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2004年 / 40卷 / 04期

关键词：

oxide media; oxygen content; perpendicular recording; recording performance;

D O I：

10.1109/TMAG.2004.832167

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：

The effect of oxygen incorporation on the crystallographic, magnetic, and recording performance of perpendicular magnetic recording (PMR) oxide media was investigated. The media were prepared by dc-magnetron sputtering of CoCrPt-SiO2 targets in an Ar/O-2 gas mixture. X-ray photoelectron spectroscopy (XPS) detected Cr-O peaks in the sputtered film, whereas no strong evidence Of SiO2 is seen. Moderate oxygen incorporation in the film (similar to15 at%) promotes Cr-O formation in the grain boundary and results in a dramatic increase of coercivity H, and signal-to-noise ratio (SNR). However, as the O-2 content is further increased, oxide incorporates into the core of the grains, resulting in decreased H-c, magnetization and SNR.

引用

页码：2498 / 2500

页数：3

共 9 条

[1] Optimization of granular double-layer perpendicular media [J].