Electric-field induced strain modulation of magnetization in Fe-Ga/Pb(Mg1/3Nb2/3)-PbTiO3 magnetoelectric heterostructures

TR Number
Date
2014-02-24
Journal Title
Journal ISSN
Volume Title
Publisher
American Institute of Physics
Abstract

Magnetostrictive Fe-Ga thin layers were deposited on < 110 >-oriented Pb(Mg1/3Nb2/3)-30% PbTiO3 (PMN-30% PT) substrates by pulsed laser deposition. The as-prepared heterostructures showed columnar arrays aligned in the out-of-plane direction. Transmission electron microscopy revealed nanocrystalline regions within the columnar arrays of the Fe-Ga film. The heterostructure exhibited a strong converse magnetoelectric coupling effect of up to 4.55 x 10(-7) s m(-1), as well as an electric field tunability of the in-plane magnetic anisotropy. Furthermore, the remanent magnetization states of the Fe-Ga films can be reversibly and irreversibly changed by external electric fields, suggesting a promising and robust application in magnetic random access memories and spintronics. (C) 2014 AIP Publishing LLC.

Description
Keywords
Piezoelectric fields, Heterojunctions, Magnetic films, Ferromagnetism, Magnetic anisotropy
Citation
Zhang, Yue, Wang, Zhiguang, Wang, Yaojin, Luo, Chengtao, Li, Jiefang, Viehland, Dwight (2014). Electric-field induced strain modulation of magnetization in Fe-Ga/Pb(Mg1/3Nb2/3)-PbTiO3 magnetoelectric heterostructures. Journal of Applied Physics, 115(8). doi: 10.1063/1.4866495