There is a growing interest in BiFeO3-based alloys because of the possibility it offers for developing high-temperature high-performance piezoelectric materials and for their interesting multiferroic properties. Often such ceramics are synthesized with additives either to reduce/suppress leakage current that the system inherits from the parent compound BiFeO3 or to promote sintering via formation of the liquid phase. We demonstrate here the propensity for stabilizing ferromagnetism in the ferroelectric solid solution BiFeO3–PbTiO3 (BF–PT) when synthesized with additive MnO2. Detailed investigation revealed that the ferromagnetic property of the ceramic is extrinsic and caused by the additive enabled precipitation of trace amount of the ferrimagnetic Pb-hexaferrite phase, not easily detected in conventional x-ray diffraction measurements. We also show that the ferromagnetic property is induced in Co-modified BF–PT. However, in this case, the additive stabilizes the CoFe2O4 spinel ferrite phase. While our findings offer a strategy to develop particulate magnetoelectric multiferroic composites using additive assisted precipitation of the ferrimagnetic phase(s) in BiFeO3-based ferroelectric alloys, it also helps in better understanding of the electromechanical response in BFO-based alloys.
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14 February 2023
Research Article|
February 14 2023
Inducing ferromagnetism and magnetoelectric coupling in the ferroelectric alloy system BiFeO3–PbTiO3 via additives
Sujoy Saha
;
Sujoy Saha
a)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Resources, Software, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Department of Materials Engineering, Indian Institute of Science
, C. V. Raman Avenue, Bangalore 560012, India
a)Author to whom correspondence should be addressed: [email protected]
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Ram Prakash Singh
;
Ram Prakash Singh
(Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Resources, Software, Validation, Visualization)
1
Department of Materials Engineering, Indian Institute of Science
, C. V. Raman Avenue, Bangalore 560012, India
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Ashish Rout
;
Ashish Rout
(Data curation, Formal analysis, Investigation, Methodology, Resources, Validation, Visualization)
1
Department of Materials Engineering, Indian Institute of Science
, C. V. Raman Avenue, Bangalore 560012, India
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Aditya Mishra
;
Aditya Mishra
(Data curation, Formal analysis, Investigation, Methodology, Resources, Validation, Visualization)
1
Department of Materials Engineering, Indian Institute of Science
, C. V. Raman Avenue, Bangalore 560012, India
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Amanat Ali
;
Amanat Ali
(Data curation, Formal analysis, Investigation, Methodology, Resources, Validation, Visualization)
1
Department of Materials Engineering, Indian Institute of Science
, C. V. Raman Avenue, Bangalore 560012, India
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Himalay Basumatary
;
Himalay Basumatary
(Data curation, Formal analysis, Methodology, Resources, Software, Validation, Visualization)
2
Defence Metallurgical Research Laboratory
, Kanchanbagh, Hyderabad 500058, India
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Rajeev Ranjan
Rajeev Ranjan
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Department of Materials Engineering, Indian Institute of Science
, C. V. Raman Avenue, Bangalore 560012, India
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a)Author to whom correspondence should be addressed: [email protected]
J. Appl. Phys. 133, 064101 (2023)
Article history
Received:
November 05 2022
Accepted:
January 26 2023
Citation
Sujoy Saha, Ram Prakash Singh, Ashish Rout, Aditya Mishra, Amanat Ali, Himalay Basumatary, Rajeev Ranjan; Inducing ferromagnetism and magnetoelectric coupling in the ferroelectric alloy system BiFeO3–PbTiO3 via additives. J. Appl. Phys. 14 February 2023; 133 (6): 064101. https://doi.org/10.1063/5.0133733
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