Influence of Thermal Deformation on Exchange Bias in FeGa/IrMn Bilayers Grown on Flexible Polyvinylidene Fluoride Membranes

Yao Zhang; Qingfeng Zhan; Xin Rong; Huihui Li; Zhenghu Zuo; Yiwei Liu; Baomin Wang; Run Wei Li

doi:10.1109/TMAG.2016.2529722

Influence of Thermal Deformation on Exchange Bias in FeGa/IrMn Bilayers Grown on Flexible Polyvinylidene Fluoride Membranes

Yao Zhang
, Qingfeng Zhan^*
, Xin Rong
, Huihui Li
, Zhenghu Zuo
, Yiwei Liu
, Baomin Wang
, Run Wei Li

^*Corresponding author for this work

CAS - Ningbo Institute of Material Technology and Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We investigated the influence of thermal deformation on the magnetic properties of flexible FeGa/IrMn exchange-biased (EB) bilayers grown on polyvinylidene fluoride (PVDF) membranes with the pinning direction parallel to the thermal deformation directions α₃₁ and α₃₂ of PVDF. Because with increasing temperature, the uniaxial anisotropy is reoriented from the α₃₂ to α₃₁ directions by the thermally induced compressive strain along the α₃₂ direction, both the coercive field H_c and the loop squareness M_r/M_s of FeGa/IrMn bilayers display a complex temperature-dependent behavior. The EB field H_c decreases with increasing temperature. A modified Stoner-Wohlfarth model was employed to account for the temperature dependence of magnetic properties in the flexible FeGa/IrMn bilayers.

Original language	English
Article number	7406715
Journal	IEEE Transactions on Magnetics
Volume	52
Issue number	7
DOIs	https://doi.org/10.1109/TMAG.2016.2529722
State	Published - Jul 2016
Externally published	Yes

Keywords

exchange bias
flexible magnetoelectronics
temperature modulation
thermal expansion

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10.1109/TMAG.2016.2529722

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@article{c62f8c6ed9924f3e95b4335bfebf609d,

title = "Influence of Thermal Deformation on Exchange Bias in FeGa/IrMn Bilayers Grown on Flexible Polyvinylidene Fluoride Membranes",

abstract = "We investigated the influence of thermal deformation on the magnetic properties of flexible FeGa/IrMn exchange-biased (EB) bilayers grown on polyvinylidene fluoride (PVDF) membranes with the pinning direction parallel to the thermal deformation directions α31 and α32 of PVDF. Because with increasing temperature, the uniaxial anisotropy is reoriented from the α32 to α31 directions by the thermally induced compressive strain along the α32 direction, both the coercive field Hc and the loop squareness Mr/Ms of FeGa/IrMn bilayers display a complex temperature-dependent behavior. The EB field Hc decreases with increasing temperature. A modified Stoner-Wohlfarth model was employed to account for the temperature dependence of magnetic properties in the flexible FeGa/IrMn bilayers.",

keywords = "exchange bias, flexible magnetoelectronics, temperature modulation, thermal expansion",

author = "Yao Zhang and Qingfeng Zhan and Xin Rong and Huihui Li and Zhenghu Zuo and Yiwei Liu and Baomin Wang and Li, \{Run Wei\}",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.",

year = "2016",

month = jul,

doi = "10.1109/TMAG.2016.2529722",

language = "英语",

volume = "52",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "7",

}

TY - JOUR

T1 - Influence of Thermal Deformation on Exchange Bias in FeGa/IrMn Bilayers Grown on Flexible Polyvinylidene Fluoride Membranes

AU - Zhang, Yao

AU - Zhan, Qingfeng

AU - Rong, Xin

AU - Li, Huihui

AU - Zuo, Zhenghu

AU - Liu, Yiwei

AU - Wang, Baomin

AU - Li, Run Wei

PY - 2016/7

Y1 - 2016/7

N2 - We investigated the influence of thermal deformation on the magnetic properties of flexible FeGa/IrMn exchange-biased (EB) bilayers grown on polyvinylidene fluoride (PVDF) membranes with the pinning direction parallel to the thermal deformation directions α31 and α32 of PVDF. Because with increasing temperature, the uniaxial anisotropy is reoriented from the α32 to α31 directions by the thermally induced compressive strain along the α32 direction, both the coercive field Hc and the loop squareness Mr/Ms of FeGa/IrMn bilayers display a complex temperature-dependent behavior. The EB field Hc decreases with increasing temperature. A modified Stoner-Wohlfarth model was employed to account for the temperature dependence of magnetic properties in the flexible FeGa/IrMn bilayers.

AB - We investigated the influence of thermal deformation on the magnetic properties of flexible FeGa/IrMn exchange-biased (EB) bilayers grown on polyvinylidene fluoride (PVDF) membranes with the pinning direction parallel to the thermal deformation directions α31 and α32 of PVDF. Because with increasing temperature, the uniaxial anisotropy is reoriented from the α32 to α31 directions by the thermally induced compressive strain along the α32 direction, both the coercive field Hc and the loop squareness Mr/Ms of FeGa/IrMn bilayers display a complex temperature-dependent behavior. The EB field Hc decreases with increasing temperature. A modified Stoner-Wohlfarth model was employed to account for the temperature dependence of magnetic properties in the flexible FeGa/IrMn bilayers.

KW - exchange bias

KW - flexible magnetoelectronics

KW - temperature modulation

KW - thermal expansion

UR - https://www.scopus.com/pages/publications/84977105409

U2 - 10.1109/TMAG.2016.2529722

DO - 10.1109/TMAG.2016.2529722

M3 - 文章

AN - SCOPUS:84977105409

SN - 0018-9464

VL - 52

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 7

M1 - 7406715

ER -

Influence of Thermal Deformation on Exchange Bias in FeGa/IrMn Bilayers Grown on Flexible Polyvinylidene Fluoride Membranes

Abstract

Keywords

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