Investigation on Magnetic Fields From Field-Generating Layer in MAMR

被引：1

作者：

Yoshida, Kazuetsu ^{[1
]}

Uda, Eisei ^{[1
]}

Udagawa, Natsuumi ^{[1
]}

Kanai, Yasushi ^{[2
]}

机构：

[1] Kogakuin Univ, Dept Informat & Commun Engn, Tokyo 1638677, Japan

[2] Niigata Inst Technol, Kashiwazaki 9451195, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 11期

关键词：

Magnetic recording; magnetic resonance; micro magnetic simulation; microwave-assisted magnetic recording (MAMR); microwave magnetic devices;

D O I：

10.1109/TMAG.2008.2002514

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：

Microwave-assisted magnetic recording (MAMR) has recently emerged as a candidate to solve the trilemma in magnetic recording. In this study, the fundamental characteristics of the magnetic fields generated by a field-generating layer (FGL) are investigated using micromagnetic simulations. The relationships between the fields generated by the FGL and magnetic parameters, such as interlayer exchange coupling strength (A(perpendicular to)) and the anisotropy constant (K), are investigated. In addition, oscillation behaviors are investigated by examining the magnetization configurations of the FGL. A Bloch-line-like magnetic structure is observed in the FGL in the stable oscillation mode. The Bloch-line-like structure functions as a rotation axis. However, it disappears in the unstable oscillation mode.

引用

页码：3408 / 3411

页数：4

共 4 条

[1] Magnetization dynamics with a spin-transfer torque [J].

Li, Z ;

Zhang, S .

PHYSICAL REVIEW B, 2003, 68 (02)

[2] Microwave assisted magnetic recording [J].

Zhu, Jian-Gang ;

Zhu, Xiaochun ;

Tang, Yuhui .

IEEE TRANSACTIONS ON MAGNETICS, 2008, 44 (01) :125-131

[3] Spin transfer excited regular and chaotic spin waves in current perpendicular to plane spin valves [J].

Zhu, XC ;

Zhu, JG ;

White, RM .

JOURNAL OF APPLIED PHYSICS, 2004, 95 (11) :6630-6632

[4] Bias-field-free microwave oscillator driven by perpendicularly polarized spin current [J].

Zhu, Xiaochun ;

Zhu, Jian-Gang .

IEEE TRANSACTIONS ON MAGNETICS, 2006, 42 (10) :2670-2672

← 1 →