%A Jiapeng Zhao(赵佳鹏), Qinhuang Guo(郭勤皇), Huizhong Yin(尹慧中), Jintang Zou(邹锦堂), Zhenjie Zhao(赵振杰), Wenjuan Cheng(程文娟), Dongmei Jiang(蒋冬梅), and Qingfeng Zhan(詹清峰) %T Magnetoelastic coupling effect of Fe10Co90 films grown on different flexible substrates %0 Journal Article %D 2020 %J Chin. Phys. B %R 10.1088/1674-1056/abb22d %P 117501- %V 29 %N 11 %U {https://cpb.iphy.ac.cn/CN/abstract/article_122981.shtml} %8 2020-11-05 %X

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.