Compositionally graded magnetic multilayer films for high areal density longitudinal recording

被引：2

作者：

Choe, G ^{[1
]}

Acharya, BR ^{[1
]}

Zhou, JN ^{[1
]}

Yu, M ^{[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：

magnetic recording media; multilayer films; signal-to-noise ratio; thermal stability;

D O I：

10.1109/TMAG.2004.832663

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：

Compositionally graded magnetic multilayer (CGM) structures were investigated to improve media signal-to-noise ratio (SNR) as well as thermal stability. The medium structure consists of multiple magnetic layers that play an important role in determining the crystallographic texture as well as magnetic activation volume. Low medium noise is achieved while retaining high resolution, as the number of layers is increased. The CGM media offer a magnetic anisotropy gradient from the top to bottom layers, which enhances head writability at high frequencies without affecting thermal stability. Improved magnetic and recording properties such as high K-u V/kT, SNR, and overwrite are obtained with CGM media, suitable for high areal density recording.

引用

页码：2425 / 2427

页数：3