Co-Ni-Fe write heads with a 10-μm yoke length for high-speed recording

被引：10

作者：

Nonaka, Y ^{[1
]}

Honjo, H ^{[1
]}

Toba, T ^{[1
]}

Saito, S ^{[1
]}

Ishi, T ^{[1
]}

Saito, M ^{[1
]}

Ishiwata, N ^{[1
]}

Ohashi, K ^{[1
]}

机构：

[1] NEC Corp, Funct Devices Res Labs, Fuchu, Tokyo 1838501, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2000年 / 36卷 / 05期

关键词：

eddy currents; high-Bs material; high-speed recording; short yoke length; write head;

D O I：

10.1109/20.908490

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 [电气工程]; 0809 [电子科学与技术];

摘要：

We have developed a Co-Ni-Fe write head with a short yoke length for high-speed recording. By reducing the yoke Length to 9.5 mum, the eddy currents induced in a yoke with a relatively low resistivity (0.2 mu Omegam) were reduced. The head of this short yoke had good write performance for a medium with a coercivity of 400 kA/m (5000 Oe) at frequencies up to 250 MHz (the overwrite less than -30 dB, and nonlinear transition shift less than 7%).

引用

页码：2514 / 2516

页数：3

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