Optimum writing field for high-frequency magnetic recording

被引：5

作者：

Igarashi, M ^{[1
]}

Akagi, F ^{[1
]}

Yoshida, K ^{[1
]}

Nakamura, A ^{[1
]}

Maruyama, Y ^{[1
]}

Takano, H ^{[1
]}

机构：

[1] Hitachi Ltd, Cent Res Lab, Tokyo 1850843, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1999年 / 35卷 / 05期

关键词：

high-frequency recording; optimum writing field; characteristic frequency; micro-magnetic simulation;

D O I：

10.1109/20.800964

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：

Realistic recording conditions in longitudinal thin film media at high-frequency (up to I GHz) is investigated by a micro-magnetic simulation. It is found that the recording frequency should be set below the characteristic frequency (1/2Tr, where Tr is the rise time of the writing head); optimum writing field intensity must be increased by 1.2 Oe per MHz at a linear density of 244 kFCI; and remanence coercivity measured by a square pulse slightly increases up to 1 GHz when damping constant is 0.03.

引用

页码：2721 / 2723

页数：3

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