Mechanically tunable magnetic properties of Fe81Ga19 films grown on flexible substrates

被引：103

作者：

Dai, Guohong ^{[1
,2
,3
]}

Zhan, Qingfeng ^{[1
,2
]}

Liu, Yiwei ^{[1
,2
]}

Yang, Huali ^{[1
,2
]}

Zhang, Xiaoshan ^{[1
,2
]}

Chen, Bin ^{[1
,2
]}

Li, Run-Wei ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Key Lab Magnet Mat & Devices, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

[2] Chinese Acad Sci, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

[3] Nanchang Univ, Sch Sci, Nanchang 330031, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 12期

基金：

浙江省自然科学基金;

关键词：

compressive strength; gallium alloys; internal stresses; iron alloys; magnetic anisotropy; magnetic hysteresis; magnetic thin films; magnetostriction; metallic thin films; sputter deposition; tensile strength; MAGNETOSTRICTIVE PROPERTIES; THIN-FILM; STRESS; COERCIVITY; ANISOTROPY; ALLOYS; GMR;

D O I：

10.1063/1.3696887

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated on magnetic properties of magnetostrictive Fe81Ga19 films grown on flexible polyethylene terephthalate (PET) substrates under various mechanical strains. The unstrained Fe81Ga19 films exhibit a significant uniaxial magnetic anisotropy due to a residual stress in PET substrates. It was found that the squareness of hysteresis loops can be tuned by an application of strains, inward/compressive or outward/tensile bending of the films. A modified Stoner-Wohlfarth model with considering a distribution of easy axes in polycrystalline films was developed to account for the mechanically tunable magnetic properties in flexible Fe81Ga19 films. These results provide an alternative way to tune mechanically magnetic properties, which is particularly important for developing flexible magnetoelectronic devices. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3696887]

引用

页数：4

共 20 条

[1] A review of magnetostrictive iron-gallium alloys [J].