Electrically controlled reversible and hysteretic magnetic domain evolution in nickel film/Pb(Mg1/3Nb2/3)O3]0.68-[PbTiO3]0.32 (011) heterostructure

被引：30

作者：

Hockel, J. L. ^{[1
]}

Pollard, S. D. ^{[2
]}

Wetzlar, K. P. ^{[1
]}

Wu, T. ^{[1
]}

Zhu, Y. ^{[2
]}

Carman, G. P. ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA

[2] Brookhaven Natl Lab, Dept Condensed Matter Phys, Upton, NY 11973 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 24期

关键词：

FIELD CONTROL;

D O I：

10.1063/1.4811249

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report direct Lorentz microscopy observations of electrically induced magnetic domain motion in a nickel film/Pb(Mg1/3Nb2/3)O-3](0.68)-[PbTiO3](0.32) (PMN-PT (011)) heterostructure. The 0.5 mm-thick PMN-PT substrate contains a 10 mu m-wide, 60 nm-thick Ni/Pt electron-permeable observation region. Stress from the substrate creates magnetoelastic anisotropy of up to 4 kJ m(-3) in the nickel film resulting in reversible magnetization rotation as well as non-reversible domain wall jumps (i.e., Barkhausen jumps). The observed magnetization of the film is directly related to the local strain gradient as computed by the finite element method, providing strong evidence of the effectiveness of the strain-mediated magnetoelectric approach for device applications. (C) 2013 AIP Publishing LLC.

引用

页数：5

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