Strain-modulated antiferromagnetic spin orientation and exchange coupling in Fe/CoO(001)

J. Zhu, Q. Li, J. X. Li, Z. Ding, C. Y. Hua, M. J. Huang, H. J. Lin, Z. Hu, C. Won, Y. Z. Wu

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The effect of CoO spin orientation on exchange coupling was investigated in single-crystalline Fe/CoO/MnO/MgO(001) systems. An antiferromagnetic CoO spin reorientation transition from the in-plane direction to the out-of-plane direction was found to be associated with the in-plane strain transition in CoO film from compression to expansion. The induced uniaxial anisotropies by exchange coupling at the Fe/CoO interface are significantly stronger for the in-plane CoO spin orientation than for the out-of-plane CoO spin orientation. Our study provides a way to modify the exchange coupling in the ferromagnetic (FM)/antiferromagnetic (AFM) bilayer by modulating the strain in the AFM film.

Original languageEnglish
Article number193903
JournalJournal of Applied Physics
Volume115
Issue number19
DOIs
Publication statusPublished - 21 May 2014

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