Correlation of magnetoelectric coupling in multiferroic BaTiO3-BiFeO3 superlattices with oxygen vacancies and antiphase octahedral rotations

Multiferroic (BaTiO3-BiFeO3) × 15 multilayer heterostructures show high magnetoelectric (ME) coefficients αME up to 24 V/cm·Oe at 300 K. This value is much higher than that of a single-phase BiFeO3 reference film (αME = 4.2 V/cm·Oe). We found clear correlation of ME coefficients with increasing oxyg...

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Published in:Applied physics letters 2015-01, Vol.106 (1)
Main Authors: Lorenz, Michael, Wagner, Gerald, Lazenka, Vera, Schwinkendorf, Peter, Modarresi, Hiwa, Van Bael, Margriet J., Vantomme, André, Temst, Kristiaan, Oeckler, Oliver, Grundmann, Marius
Format: Article
Language:English
Subjects:
Applied physics
Barium titanates
Bismuth ferrite
Correlation
Coupling
Electron diffraction
Electrons
Heterostructures
Multiferroic materials
Multilayers
Oxygen
Partial pressure
Scanning electron microscopy
Scanning transmission electron microscopy
Superlattices
Transmission electron microscopy
Vacancies
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cited_by cdi_FETCH-LOGICAL-c292t-970d0dfcb3eebc681ce2ec72f52b73f22d72e47781eeb542e8f2677ab080fc9c3
cites cdi_FETCH-LOGICAL-c292t-970d0dfcb3eebc681ce2ec72f52b73f22d72e47781eeb542e8f2677ab080fc9c3
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container_issue 1
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container_title Applied physics letters
container_volume 106
creator Lorenz, Michael
Wagner, Gerald
Lazenka, Vera
Schwinkendorf, Peter
Modarresi, Hiwa
Van Bael, Margriet J.
Vantomme, André
Temst, Kristiaan
Oeckler, Oliver
Grundmann, Marius
description Multiferroic (BaTiO3-BiFeO3) × 15 multilayer heterostructures show high magnetoelectric (ME) coefficients αME up to 24 V/cm·Oe at 300 K. This value is much higher than that of a single-phase BiFeO3 reference film (αME = 4.2 V/cm·Oe). We found clear correlation of ME coefficients with increasing oxygen partial pressure during growth. ME coupling is highest for lower density of oxygen vacancy-related defects. Detailed scanning transmission electron microscopy and selected area electron diffraction microstructural investigations at 300 K revealed antiphase rotations of the oxygen octahedra in the BaTiO3 single layers, which are an additional correlated defect structure of the multilayers.
doi_str_mv 10.1063/1.4905343
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list); AIP_美国物理联合会现刊（与NSTL共建）
subjects Applied physics
Barium titanates
Bismuth ferrite
Correlation
Coupling
Electron diffraction
Electrons
Heterostructures
Multiferroic materials
Multilayers
Oxygen
Partial pressure
Scanning electron microscopy
Scanning transmission electron microscopy
Superlattices
Transmission electron microscopy
Vacancies
title Correlation of magnetoelectric coupling in multiferroic BaTiO3-BiFeO3 superlattices with oxygen vacancies and antiphase octahedral rotations
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