Spatially Resolved Ferroelectric Domain-Switching-Controlled Magnetism in CoFeB/Pb(MgNb)TiO Multiferroic Heterostructure

Overview

Journal ACS Appl Mater Interfaces

Publisher American Chemical Society

Specialties Biomedical Engineering
Biotechnology

Date 2016 Dec 28

PMID 28025891

Citations 7

Authors

Peisen Li

Yonggang Zhao

Sen Zhang

Aitian Chen

Dalai Li

Jing Ma

Yan Liu

Daniel T Pierce

John Unguris

Hong-Guang Piao

Huiyun Zhang

Meihong Zhu

Xiaozhong Zhang

Xiufeng Han

Mengchun Pan

Ce-Wen Nan

Affiliations

Soon will be listed here.

Abstract

Intrinsic spatial inhomogeneity or phase separation in cuprates, manganites, etc., related to electronic and/or magnetic properties, has attracted much attention due to its significance in fundamental physics and applications. Here we use scanning Kerr microscopy and scanning electron microscopy with polarization analysis with in situ electric fields to reveal the existence of intrinsic spatial inhomogeneity of the magnetic response to an electric field on a mesoscale with the coexistence of looplike (nonvolatile) and butterfly-like (volatile) behaviors in CoFeB/Pb(MgNb)TiO ferromagnetic/ferroelectric (FM/FE) multiferroic heterostructures. Both the experimental results and micromagnetic simulations suggest that these two behaviors come from the 109° and the 71°/180° FE domain switching, respectively, which have a spatial distribution. This FE domain-switching-controlled magnetism is significant for understanding the nature of FM/FE coupling on the mesoscale and provides a path for designing magnetoelectric devices through domain engineering.

Citing Articles

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