Bismuth ferrite (BiFeO3) thin films were epitaxially grown on (110)- and (001)-oriented NdGaO3 single crystal orthorhombic substrates by pulsed laser deposition. The films grown on NdGaO3(110) are fully strained and show two ferroelectric variants that arrange in a stripe domain pattern with 71° domain walls, as revealed by piezoresponse force microscopy. We explored their antiferromagnetic textures using scanning nitrogen-vacancy magnetometry. Surprisingly given the large compressive strain state, the films still show a spin cycloid, resulting in a periodic zig-zag magnetic pattern due to the two ferroelastic variants. The films grown on NdGaO3(001) are also fully strained, but the (001) orthorhombic substrate imposes a strongly anisotropic in-plane strain. As a consequence, the ferroelectric polarization exhibits a uniaxial in-plane component, parallel to the b-axis of the substrate. The ferroelectric domain pattern consists of 109° charged domain walls between the two selected ferroelastic variants. This anisotropic strain impacts the magnetic state of BiFeO3 and leads to a simpler spin texture defined by a single propagation vector for the spin cycloid. In both cases, electric-field control of ferroelectric domains tends to favor a transition to a canted antiferromagnetic order. These results reveal that the cycloidal structure of BiFeO3 can undergo large compressive strain and open further electrical means to tune the magnetic state of this room-temperature multiferroic compound.
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10 June 2024
Research Article|
June 13 2024
Interplay between anisotropic strain, ferroelectric, and antiferromagnetic textures in highly compressed BiFeO3 epitaxial thin films
Amr Abdelsamie
;
Amr Abdelsamie
(Data curation, Formal analysis, Writing – original draft, Writing – review & editing)
1
Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay
, 91767 Palaiseau, France
2
Laboratoire Charles Coulomb, Université de Montpellier and CNRS
, 34095 Montpellier, France
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Arthur Chaudron
;
Arthur Chaudron
(Data curation, Formal analysis, Writing – review & editing)
1
Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay
, 91767 Palaiseau, France
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Karim Bouzehouane
;
Karim Bouzehouane
(Data curation, Methodology)
1
Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay
, 91767 Palaiseau, France
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Pauline Dufour
;
Pauline Dufour
(Data curation)
1
Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay
, 91767 Palaiseau, France
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Aurore Finco
;
Aurore Finco
(Formal analysis, Writing – review & editing)
2
Laboratoire Charles Coulomb, Université de Montpellier and CNRS
, 34095 Montpellier, France
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Cécile Carrétéro;
Cécile Carrétéro
(Data curation)
1
Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay
, 91767 Palaiseau, France
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Vincent Jacques
;
Vincent Jacques
(Formal analysis, Funding acquisition, Writing – review & editing)
2
Laboratoire Charles Coulomb, Université de Montpellier and CNRS
, 34095 Montpellier, France
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Stéphane Fusil
;
Stéphane Fusil
(Conceptualization, Formal analysis, Writing – original draft, Writing – review & editing)
1
Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay
, 91767 Palaiseau, France
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Vincent Garcia
Vincent Garcia
a)
(Conceptualization, Formal analysis, Funding acquisition, Supervision, Writing – original draft, Writing – review & editing)
1
Laboratoire Albert Fert, CNRS, Thales, Université Paris-Saclay
, 91767 Palaiseau, France
a)Author to whom correspondence should be addressed: vincent.garcia@cnrs-thales.fr
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a)Author to whom correspondence should be addressed: vincent.garcia@cnrs-thales.fr
Appl. Phys. Lett. 124, 242902 (2024)
Article history
Received:
March 18 2024
Accepted:
June 03 2024
Citation
Amr Abdelsamie, Arthur Chaudron, Karim Bouzehouane, Pauline Dufour, Aurore Finco, Cécile Carrétéro, Vincent Jacques, Stéphane Fusil, Vincent Garcia; Interplay between anisotropic strain, ferroelectric, and antiferromagnetic textures in highly compressed BiFeO3 epitaxial thin films. Appl. Phys. Lett. 10 June 2024; 124 (24): 242902. https://doi.org/10.1063/5.0208996
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