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

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2014-02-24

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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.

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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

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http://hdl.handle.net/10919/52414

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Scholarly Works, Materials Science and Engineering (MSE)