Stress-controlled dynamic susceptibility in FeGa stripes

被引：11

作者：

Dai, Guohong ^{[1
]}

Xing, Xiangjun ^{[2
]}

Shen, Yun ^{[1
]}

Deng, Xiaohua ^{[1
]}

机构：

[1] Nanchang Univ, Sch Sci, Nanchang 330031, Jiangxi, Peoples R China

[2] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2018年 / 123卷 / 24期

基金：

中国国家自然科学基金;

关键词：

MAGNETOSTRICTIVE PROPERTIES; UNIAXIAL ANISOTROPY; THIN-FILMS; FREQUENCY; MAGNETIZATION; RESONANCE; PERMEABILITY;

D O I：

10.1063/1.5030382

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Knowledge of the dynamic magnetic susceptibility of patterned films is of great importance for exploring future data-storage applications and microwave devices. Since ferromagnetic resonance frequency is a function of the geometric parameters of a certain magnetic system, in this work, we investigate by micromagnetic simulations a set of stripe-patterned FeGa films, which have an identical thickness of 10 nm but a varying width in the range of 30-80 nm and a varying length in the range of 200-1000 nm. Fast-Fourier transform analysis of the simulation results for ferromagnetic resonance calculation identifies two distinct resonance peaks, which are assigned to a "bulk" mode and an "edge" mode. The presence of stress-induced anisotropy significantly affects both the two resonant modes. The occupation area of the spreading magnetization near the stripe ends is controllable by a tensile or compressive stress applied along the strip width. Consequently, the dynamic susceptibility of FeGa can be adjusted by an applied stress. Published by AIP Publishing.

引用

页数：6

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