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

Title
Strain-induced magnetoelectric coupling in BaTiO3/Fe3O4 core/shell nanoparticles
Authors
Koo, Y.S.; Song, K.M.; Hur, N.; Jung, J.H.
Keywords
strain, magnetoelectric coupling, nanoparticles
Issue Date
2009-01
Publisher
American Institute of 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
http://dspace.inha.ac.kr/handle/10505/1525
ISSN
0003-6951
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
Files in This Item:
Strain-induced.pdfDownload

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse