Peculiar Magnetoelectric Coupling in BaTiO3:Fe113 ppm Nanoscopic Segregations

We report polycrystalline BaTiO3 with cooperative magnetization behavior associated with the scarce presence of about 113 atomic ppm of Fe ions, clearly displaying magnetoelectric coupling with significant changes in magnetization (up to ΔM/M ≈ 32%) at the ferroelectric transitions. We find that Fe...

Full description

Saved in:
Bibliographic Details
Published inACS applied materials & interfaces Vol. 7; no. 44; pp. 24741 - 24747
Main Authors Amorim, C. O, Figueiras, F, Amaral, J. S, Vaghefi, P. Mirzadeh, Tavares, P. B, Correia, M. R, Baghizadeh, A, Alves, E, Rocha, J, Amaral, V. S
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 11.11.2015
Subjects
BaTiO3:Fe
multiferroic
interfaces
magnetoelectric
magnetism
autocomposite
nanoscopic segregations
Online AccessGet full text

Cover

More Information
Summary:We report polycrystalline BaTiO3 with cooperative magnetization behavior associated with the scarce presence of about 113 atomic ppm of Fe ions, clearly displaying magnetoelectric coupling with significant changes in magnetization (up to ΔM/M ≈ 32%) at the ferroelectric transitions. We find that Fe ions are segregated mostly at the interfaces between grain boundaries and an Fe-rich phase, forming a self-composite with high magnetoelectric coupling above room temperature. We compare our results with ab initio calculations and other experimental results found in the literature, proposing mechanisms that could be behind the magnetoelectric coupling within the ferroelectric matrix. These findings open the way for further strategies to optimize interfacial magnetoelectric couplings.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.5b07462