Magneto-mechanical coupling effect in amorphous Co40Fe40B20films grown on flexible substrates

Zhenhua Tang, Baomin Wang, Huali Yang, Xinyu Xu, Yiwei Liu, Dandan Sun, Lixiang Xia, Qingfeng Zhan, Bin Chen, Minghua Tang, Yichun Zhou, Junling Wang, Run Wei Li

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64 Scopus citations

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.

Original languageEnglish
Article number103504
JournalApplied Physics Letters
Volume105
Issue number10
DOIs
StatePublished - 8 Sep 2014
Externally publishedYes

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