Magnetization reversal through synchronization with a microwave

被引：91

作者：

Sun, Z. Z. ^{[1
]}

Wang, X. R. ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.74.132401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on the Landau-Lifshitz-Gilbert equation, it can be shown that a circularly polarized microwave can reverse the magnetization of a Stoner particle through synchronization. In comparison with magnetization reversal induced by a static magnetic field, it can be shown that when a proper microwave frequency is used the minimal switching field is much smaller than that of precessional magnetization reversal. A microwave needs only to overcome the energy dissipation of a Stoner particle in order to reverse magnetization, unlike the conventional method with a static magnetic field where the switching field must be of the order of magnetic anisotropy.

引用

页数：4

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