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Strain-induced magnetoelectric coupling in BaTiO3/Fe3O4 core/shell nanoparticles SCIE SCOPUS

Title
Strain-induced magnetoelectric coupling in BaTiO3/Fe3O4 core/shell nanoparticles
Authors
Koo, YSSong, KMHur, NJung, JHJang, THLee, HJKoo, TYJeong, YHCho, JHJo, YH
Date Issued
2009-01-19
Publisher
AMER INST PHYSICS
Abstract
We report a strain-induced magnetoelectric coupling in BaTiO3/Fe3O4 ferroelectric core/ferrimagnetic shell nanoparticles. The temperature-dependent magnetoresistance and magnetization clearly show several jumps near the structural phase transition temperatures of BaTiO3. Below the Verwey transition temperature of Fe3O4, i.e., at 20 K, the dielectric constant of BaTiO3/Fe3O4 decreases continuously upon application of an external magnetic field, and the observed magnetodielectric curve does not follow the square of the magnetization. We discuss the effect of strain on the electric field-dependent magnetic anisotropy near the core/shell interface.
URI
https://oasis.postech.ac.kr/handle/2014.oak/9652
DOI
10.1063/1.3073751
ISSN
0003-6951
Article Type
Article
Citation
APPLIED PHYSICS LETTERS, vol. 94, no. 32903, 2009-01-19
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