Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/19632
Title: Peculiar Magnetoelectric Coupling in BaTiO3:Fe-113 ppm Nanoscopic Segregations
Author: Amorim, C. O.
Figueiras, F.
Amaral, J. S.
Mirzadeh Vaghefi, P.
Tavares, P. B.
Correia, M. R.
Baghizadeh, A.
Alves, E.
Rocha, J.
Amaral, V. S.
Keywords: TUNNEL-JUNCTIONS
ROOM-TEMPERATURE
MULTIFERROICS
INTERFACE
CERAMICS
LSGM
Issue Date: 2015
Publisher: AMER CHEMICAL SOC
Abstract: 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 Delta M/M approximate to 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.
Peer review: yes
URI: http://hdl.handle.net/10773/19632
DOI: 10.1021/acsami.5b07462
ISSN: 1944-8244
Publisher Version: 10.1021/acsami.5b07462
Appears in Collections:CICECO - Artigos



FacebookTwitterLinkedIn
Formato BibTex MendeleyEndnote Degois 

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