Control de defectos en la modulación del efecto magnetodieléctrico de BiFeO3 co-dopada con Sr y Mn

Fernando Pedro-García; Félix Sánchez-De Jesús; Ana María Bolarín-Miró; Arturo Barba-Pingarrón; Màrius Ramírez-Cardona; Miguel Ángel Olvera-Hernández

doi:10.29057/icbi.v8iEspecial.6265

Fernando Pedro-García Universidad Nacional Autónoma de México https://orcid.org/0000-0002-5625-4224
Félix Sánchez-De Jesús Universidad Autónoma del Estado de Hidalgo https://orcid.org/0000-0002-9453-1755
Ana María Bolarín-Miró Universidad Autónoma del Estado de Hidalgo https://orcid.org/0000-0002-2199-1208
Arturo Barba-Pingarrón Universidad Nacional Autónoma de México https://orcid.org/0000-0001-7285-9429
Màrius Ramírez-Cardona Universidad Autónoma del Estado de Hidalgo https://orcid.org/0000-0003-4376-3377
Miguel Ángel Olvera-Hernández Universidad Autónoma del Estado de Hidalgo

DOI: https://doi.org/10.29057/icbi.v8iEspecial.6265

Keywords: Magnetodielectric effect, co-doping, multiferroic, bismuth ferrite

Abstract

Magnetodielectric multiferroics currently present an innovative alternative in the development of FE-RAMs. The control of them can be carried out using materials such as bismuth ferrite (BiFeO3), however it presents some difficulties to carry out this task, such as antiferromagnetic behavior and the inevitable presence of secondary phases, although these problems can be solved by means of cationic substitution that in turn introduce defects in the crystal structure of BiFeO3. The defects in turn influence the modulation of the magnetodielectric effect. The following work presents the experimental evidence of the control of defects in the crystal structure of BiFeO₃ co-doped with Sr²⁺ and Mn³⁺ (Bi_0.95Sr_0.05Fe_1-xMn_xO₃, Δx = 0.1) obtained by mechanical assisted method and its influence on the magnetodielectric properties. By means of X-ray diffraction, the presence of BiFeO₃ in its rhombohedral phase was verified. By magnetodielectric tests it was verified that the defects induced by the cationic substitution help in modulating the magnetodielectric properties.

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