Effective Write Field for Microwave Assisted Magnetic Recording

被引：11
|
作者：
Igarashi, M. [1 ]
Suzuki, Y. [1 ,2 ]
Miyamoto, H. [1 ]
Shiroishi, Y. [1 ,3 ]
机构：
[1] Hitachi Ltd, Cent Res Lab, Tokyo 1858601, Japan
[2] Hitachi Ltd, Cent Res Lab, Kanagawa 2568510, Japan
[3] Hitachi Ltd, Div Res & Dev, Kanagawa 2568510, Japan
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 06期
关键词：
Effective high frequency field; effective write field; Landau Lifshitz Gilbert (LLG) simulation; microwave assisted magnetic recording (MAMR); write field gradient;
D O I：
10.1109/TMAG.2010.2045644
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：
The effective write field of microwave assisted magnetic recording (MAMR) was investigated using the Landau Lifshitz Gilbert (LLG) simulation and an analytical method. An effective component of high frequency (HF) field was obtained by considering the angle between the magnetization of recording media and the HF field generated from field generation layer (FGL). An analytical method to obtain the effective write field was proposed by using the switching properties of the recording medium graphically. The obtained effective write field has shown that the value of the maximal effective field gradient of 1850 Oe/nm is three times larger than that for Stoner-Wohlfarth effective write field.
引用
收藏
页码：2507 / 2509
页数：3
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