BICRYSTAL CLUSTER STRUCTURE AND MAGNETIC-PROPERTIES OF COCRTA/CR THIN-FILM MEDIA

被引：11

作者：

HOSOE, Y

YAHISA, Y

TSUCHIYAMA, R

ISHIKAWA, A

YOSHIDA, K

IGARASHI, M

SHIROISHI, Y

机构：

[1] Central Research Laboratory, Hitachi, Ltd., Kokubunji

[2] Data Storage & Retrieval Systems Division, Hitachi, Ltd., Qdawara

[3] Mechanical Engineering Research Laboratory, Hitachi, Ltd., Tsuchiura

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1995年 / 31卷 / 06期

关键词：

D O I：

10.1109/20.490164

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：

Structures of bicrystal clusters of CoCrTa thin film media are examined using high resolution transmission electron microscopy (HRTEM), and the effects of the bicrystal clusters on magnetic hysteresis were studied using micromagnetic simulation. The bicrystal cluster of CoCrTa consists of two crystal lographic variants grown on a single Cr underlayer grain with their c axes normally-aligned in the film plane. The typical number of grains in each cluster is 2 to 3. With the bicrystal structure, coercivity decreases significantly as grain size decreases when intergranular exchange coupling is strong, and high hysteresis squareness can be obtained. Coercivity in the small grain size region can be increased by reducing the exchange coupling.

引用

页码：2824 / 2826

页数：3

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