Magnetoelastic coupling effect of Fe10Co90 films grown on different flexible substrates  

作　　者：Jiapeng Zhao Qinhuang Guo Huizhong Yin Jintang Zou Zhenjie Zhao Wenjuan Cheng Dongmei Jiang Qingfeng Zhan 赵佳鹏;郭勤皇;尹慧中;邹锦堂;赵振杰;程文娟;蒋冬梅;詹清峰(Key Laboratory of Polar Materials and Devices(MOE)and State Key Laboratory of Precision Spectroscopy,School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China;Engineering Research Center for Nanophotonics and Advanced Instrument,School of Physics and Electronic Science,East China Normal University,Ministry of Education,Shanghai 200241,China)

机构地区：[1]Key Laboratory of Polar Materials and Devices(MOE)and State Key Laboratory of Precision Spectroscopy,School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China [2]Engineering Research Center for Nanophotonics and Advanced Instrument,School of Physics and Electronic Science,East China Normal University,Ministry of Education,Shanghai 200241,China

出　　处：《Chinese Physics B》2020年第11期479-484,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11674336 and 11874150).

摘　　要：The magneto-mechanical coupling effect and magnetic anisotropy of Fe10Co90(FeCo)films deposited on silicon wafer(Si),flexible polyethylene terephthalate(PET),freestanding polydimethylsiloxane(PDMS),and pre-stretched 20%PDMS substrates were studied in detail.The loop squareness ratio Mr/Ms and the coercive Hc of the FeCo film grown on a PET substrate can be obviously tuned by applying a small tensile-bending strain,and those of the FeCo film grown on a freestanding PDMS substrate can only be slightly changed when applying a relatively large tensile bending strain.For the FeCo film prepared on a 20%pre-stretched PDMS,a wrinkled morphology is obtained after removing the pre-strain.The wrinkled FeCo film can keep the magnetic properties unchanged when applying a relatively large tensile bending strain perpendicular to the wrinkles.This reveals that PDMS is an ideal substrate for magnetic films to realize flexible immutability.Our results may help for developing flexible magnetic devices.

关 键 词：flexible substrates FeCo films magnetic anisotropy magneto-mechanical coupling effect 

分 类 号：TB383.2[一般工业技术—材料科学与工程]