Surface-effect enhanced magneto-electric coupling in FePt/PMN-PT multiferroic heterostructures

Y. T. Yang; J. Li; X. L. Peng; B. Hong; X. Q. Wang; H. L. Ge; D. H. Wang; Y. W. Du

doi:10.1063/1.4978588

AIP Advances (May 2017)

Surface-effect enhanced magneto-electric coupling in FePt/PMN-PT multiferroic heterostructures

Y. T. Yang,
J. Li,
X. L. Peng,
B. Hong,
X. Q. Wang,
H. L. Ge,
D. H. Wang,
Y. W. Du

Affiliations

Y. T. Yang: College of Materials Science and Engineering, Zhejiang Province Key Laboratory of Magnetism, China Jiliang University, Hangzhou 310018, People’s Republic of China
J. Li: College of Materials Science and Engineering, Zhejiang Province Key Laboratory of Magnetism, China Jiliang University, Hangzhou 310018, People’s Republic of China
X. L. Peng: College of Materials Science and Engineering, Zhejiang Province Key Laboratory of Magnetism, China Jiliang University, Hangzhou 310018, People’s Republic of China
B. Hong: College of Materials Science and Engineering, Zhejiang Province Key Laboratory of Magnetism, China Jiliang University, Hangzhou 310018, People’s Republic of China
X. Q. Wang: College of Materials Science and Engineering, Zhejiang Province Key Laboratory of Magnetism, China Jiliang University, Hangzhou 310018, People’s Republic of China
H. L. Ge: College of Materials Science and Engineering, Zhejiang Province Key Laboratory of Magnetism, China Jiliang University, Hangzhou 310018, People’s Republic of China
D. H. Wang: National Laboratory of Solid State Microstructures and Jiangsu Key Laboratory for Nano Technology, Nanjing University, Nanjing 210093, People’s Republic of China
Y. W. Du: National Laboratory of Solid State Microstructures and Jiangsu Key Laboratory for Nano Technology, Nanjing University, Nanjing 210093, People’s Republic of China

DOI: https://doi.org/10.1063/1.4978588
Journal volume & issue: Vol. 7, no. 5
pp. 055833 – 055833-7

Abstract

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A series of FePt films with different film thickness are deposited on Pb(Mg1/3Nb2/3)O3–PbTiO3 (PMN-PT) substrates. A standard symmetric ‘Butterfly’ shaped ΔM/M-Edc loops is obtained in 8 nm FePt/PMN-PT heterostrucuture via strain mediated magnetoelectric coupling. For the 3 nm FePt/PMN-PT heterostructure, the loop-like in-plane magnetization (M) -E curve shares a similar shape with the electric polarization of PMN-PT as a function of electric field. The value of MS shows a dramatic change of 30.9% with Edc changing from 0 to 8 kV/cm, this giant magnetoelectric effect in 3 nm FePt/PMN-PT heterostructure results from the remnant polarization induced charge on FePt/PMN-PT interface via the screening charge effect. The enhanced magnetoelectric coupling in thin magnetic/ferroelectric heterostructures opens a promising avenue for the design of ultralow power magnetoelectric devices and information storage devices.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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