HIGH-FREQUENCY CHARACTERISTICS OF MULTILAYERED COTAZR CORES FOR THIN-FILM HEADS

被引：4

作者：

ARAI, R ^{[1
]}

MITSUOKA, K ^{[1
]}

FUKUI, H ^{[1
]}

AKIMOTO, H ^{[1
]}

NARISHIGE, S ^{[1
]}

机构：

[1] HITACHI LTD,ODAWARA WORKS,ODAWARA,KANAGAWA 256,JAPAN

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1992年 / 28卷 / 05期

关键词：

D O I：

10.1109/20.179414

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：

Multi-layered cores made of CoTaZr amorphous films with alumina interlayers were prepared and their high frequency characteristics were investigated in order to develop magnetic thin film heads applicable to higher transfer rate use. Compared with single-layered cores, head noise and relaxation noises decrease significantly in multi-layered cores. Head noise decreases over 20% in the frequency region of 40 MHz, while relaxation noises are reduced gradually as the number of layers increases. These results are caused by reduction of eddy current and core losses due to wall motions. Accordingly, multi-layered CoTaZr films are expected to be used to fabricate thin film heads with low noise.

引用

页码：2115 / 2117

页数：3

共 7 条

[1] PERMEABILITY OF NARROW PERMALLOY STRIPES [J].