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Assessment of the critical behavior in the multiferroic Bi0.8Ba0.1Er0.1Fe0.96Cr0.02Co0.02O3 material, multi-substitution effect on magnetic and Mössbauer properties

Benali, A. ; Bejar, M. ; Dhahri, E. ; Hlil, E. ; Graca, M.P.F. ; Valente, M.A. ; Costa, B.F.O.

Journal of magnetism and magnetic materials, 2021-04, Vol.524, p.167640, Article 167640 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

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Título:
Assessment of the critical behavior in the multiferroic Bi0.8Ba0.1Er0.1Fe0.96Cr0.02Co0.02O3 material, multi-substitution effect on magnetic and Mössbauer properties
Autor: Benali, A. ; Bejar, M. ; Dhahri, E. ; Hlil, E. ; Graca, M.P.F. ; Valente, M.A. ; Costa, B.F.O.
Assuntos: Antiferromagnetism ; Condensed Matter ; Curie temperature ; Ferromagnetism ; Magnetic measurement ; Magnetic properties ; Magnetism ; Materials Science ; Materials substitution ; Mean-field model ; Mossbauer spectroscopy ; Multi-doping BFO ; Perovskites ; Phase transitions ; Physics ; Room temperature ; Sol-gel processes
É parte de: Journal of magnetism and magnetic materials, 2021-04, Vol.524, p.167640, Article 167640
Descrição: •Double-doping nanosized perovskites are prepared.•Pechini citric acid sol-gel method.•Perovskites exhibit ferromagnetic and anti-ferromagnetic behaviour with ferromagnetic domination.•Second order magnetic phase transition revealed.•Curie temperature and critical exponents agree with Mean-field model. The magnetic properties, Mössbauer and the critical behavior of the compound Bi0.8Ba0.1Er0.1Fe0.96Cr0.02Co0.02O3 prepared by sol-gel are the subject of this study. The compound has an R3c structure and exhibits a ferromagnetic to paramagnetic phase transition c.a. 574 K. A theoretical adjustment of the hysteresis cycles at room temperature show two magnetic contributions: Ferromagnetic (FM) and Antiferromagnetic (AFM) with a predominance of the first contribution. Mössbauer spectroscopy revealed two Fe3+ cations differently coordinated. Magnetic measurements versus magnetic field reveal that the sample exhibits a second order magnetic phase transition. The Curie temperature and the critical exponents (β, γ and δ) were determined by different techniques. These values are in agreement with the ones predicted by the mean field model.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

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Assessment of the critical behavior in the multiferroic Bi0.8Ba0.1Er0.1Fe0.96Cr0.02Co0.02O3 material, multi-substitution effect on magnetic and Mössbauer properties

Benali, A. ; Bejar, M. ; Dhahri, E. ; Hlil, E. ; Graca, M.P.F. ; Valente, M.A. ; Costa, B.F.O.

Amsterdam: Elsevier B.V

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