High-density recording capability of granular media composed of Co-Pt grains and SiO2 matrix

被引：35

作者：

Ichihara, K ^{[1
]}

Kikitsu, A ^{[1
]}

Yusu, K ^{[1
]}

Nakamura, F ^{[1
]}

Ogiwara, H ^{[1
]}

机构：

[1] Toshiba Corp, Mat & Devices Labs, Ctr Res & Dev, Kawasaki, Kanagawa 210, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1998年 / 34卷 / 04期

关键词：

bit error rate; granular media; magnetic properties; micro-structure;

D O I：

10.1109/20.706629

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：

Co-Pt and SiO2 granular films were prepared on a Cr seed layer. Co-Pt grains dispersed in the SiO2 matrix discretely. Conical grains grew in contact with the Cr layer and spherical grains grew between the conical ones. Coercivity exceeded 2 kOe and coercive squareness reached about 0.7 at a remanent magnetic moment of 0.4 memu/cm(2). Activating magnetic moment was 10(-15) emu and the index of the thermal stability was about 100. Bit error rate was held below 10(-5) up to a Linear density of 280 kfci. The recording pattern at the track width of 1 mu m was clearly visible. The Co-Pt and SiO2 granular media have potential for 5 Gb/in(2) recording.

引用

页码：1603 / 1605

页数：3

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