Local control of magnetic anisotropy in transcritical permalloy thin films using ferroelectric BaTiO3 domains

被引：18

作者：

Fackler, Sean W. ^{[1
]}

Donahue, Michael J. ^{[2
]}

Gao, Tieren ^{[1
]}

Nero, Paris N. A. ^{[1
]}

Cheong, Sang-Wook ^{[3
]}

Cumings, John ^{[1
]}

Takeuchi, Ichiro ^{[1
]}

机构：

[1] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[2] NIST, Gaithersburg, MD 20899 USA

[3] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 21期

关键词：

ELECTRIC-FIELD CONTROL; NI-FE FILMS; PERPENDICULAR ANISOTROPY; FORCE MICROSCOPY; PURE; CRYSTALS;

D O I：

10.1063/1.4902809

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the local coupling between dense magnetic stripe domains in transcritical permalloy (tPy) thin films and ferroelectric domains of BaTiO3 single crystals in a tPy/BaTiO3 heterostructure. Two distinct changes in the magnetic stripe domains of tPy were observed from the magnetic force microscopy images after cooling the heterostructure from above the ferroelectric Curie temperature of BaTiO3 (120 degrees C) to room temperature. First, an abrupt break in the magnetic stripe domain direction was found at the ferroelectric a-c-domain boundaries due to an induced change in in-plane magnetic anisotropy. Second, the magnetic stripe domain period increased when coupled to a ferroelectric a-domain due to a change in out-of-plane magnetic anisotropy. Micromagnetic simulations reveal that local magnetic anisotropy energy from inverse magnetostriction is conserved between in-plane and out-of-plane components. (C) 2014 AIP Publishing LLC.

引用

页数：5

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