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American Institute of Physics, Applied Physics Letters, 10(105), p. 103504, 2014

DOI: 10.1063/1.4895628

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Magneto-mechanical coupling effect in amorphous Co40Fe40B20 films grown on flexible substrates

Journal article published in 2014 by Zhenhua Tang, Baomin Wang, Huali Yang, Xinyu Xu, Yiwei Liu, Dandan Sun, Lixiang Xia, Qingfeng Zhan, Bin Chen, Minghua Tang, Yichun Zhou, Junling Wang ORCID, Run-Wei Li
This paper is available in a repository.
This paper is available in a repository.

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Abstract

The magneto-mechanical coupling effect of amorphous Co40Fe40B20 (CoFeB) films (10-200 nm) on flexible polyethylene terephthalate substrates were investigated in detail. The normalized remanent magnetization (Mr/Ms) of CoFeB films changes significantly (up to 62%) under small tensile or compressive strain. Moreover, the thickness dependence of the magneto-mechanical coupling effect for the flexible CoFeB films was demonstrated. These results provide important information for the development of CoFeB-based magnetic tunnel junction used in flexible spintronic devices.