Piezostrain tuning exchange bias mediated by electric field in composite heterostructure. (8th November 2017)

• Record Type: Journal Article
• Authors: Li, Pingping; Zhou, Cai; Wang, Wenqiang; Cao, Cuimei; Yao, Jinli; Jiang, Changjun
• Is Part Of: Journal of physics. Volume 50:Number 48(2017)
• Publication Date: 2017-11-08
• Subjects: exchange bias -- electric field -- unidirectional anisotropy -- uniaxial anisotropy -- strain; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/aa909c
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: The change of unidirectional anisotropy and uniaxial anisotropy field turned by piezostrain in an IrMn/Co/Ta/Pb(Mg1/3 Nb2/3 )O3 –PbTiO3 heterostructure with an exchange bias was investigated by ferromagnetic resonance at room temperature. The curve of the magnetic resonance field versus the electric fields showed an asymmetric butterfly-like behavior, which was consistent with the result of strain versus electric field curves. This butterfly-like behavior can be attributed to the piezostrain effect. Specifically, the non-volatile uniaxial anisotropy field and unidirectional anisotropy field behavior under different electric fields induced by piezostrain effect were obtained. Our result is crucial for further application of future multiferroic devices.