Structural, dielectric and magnetic properties of Bi1 -xYxFeO3 (0 ≤ x ≤ 0.2) obtained by acid-base co-precipitation

Bismuth-iron oxides with partial substitution of bismuth by yttrium, referred as (Bi1-xYx)FeO 3, were synthesized by simple-low cost acid-base co-precipitation method, which constitutes a difference with the currently used synthetic methods for obtaining BiFeO3-doped compounds (e.g. polymer assisted...

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Autores principales: Medina, L.M.S., Jorge, G.A., Martín Negri, R.
Formato: JOUR
Materias:
Bismuth-iron oxides
Impedance analysis
Magnetization
Multiferroic compounds
Yttrium substitution
Coprecipitation method
Coprecipitation synthesis
Dielectric and magnetic properties
Dielectrical properties
Magnetization curves
Multiferroics
Superparamagnetic behavior
Bismuth
Bismuth compounds
Coprecipitation
Electric impedance
Iron oxides
Leakage currents
Sol-gels
Yttrium
Yttrium compounds
Yttrium alloys
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09258388_v592_n_p306_Medina
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09258388_v592_n_p306_Medina2023-10-03T15:46:28Z Structural, dielectric and magnetic properties of Bi1 -xYxFeO3 (0 ≤ x ≤ 0.2) obtained by acid-base co-precipitation Medina, L.M.S. Jorge, G.A. Martín Negri, R. Bismuth-iron oxides Impedance analysis Magnetization Multiferroic compounds Yttrium substitution Coprecipitation method Coprecipitation synthesis Dielectric and magnetic properties Dielectrical properties Impedance analysis Magnetization curves Multiferroics Superparamagnetic behavior Bismuth Bismuth compounds Coprecipitation Electric impedance Iron oxides Leakage currents Magnetization Sol-gels Yttrium Yttrium compounds Yttrium alloys Bismuth-iron oxides with partial substitution of bismuth by yttrium, referred as (Bi1-xYx)FeO 3, were synthesized by simple-low cost acid-base co-precipitation method, which constitutes a difference with the currently used synthetic methods for obtaining BiFeO3-doped compounds (e.g. polymer assisted sol-gel, solid state, microwave, etc.) Samples were characterized by XRD, EDS, SEM, TEM, DSC and FTIR. The influence of yttrium (Y) substitution on magnetization curves of (Bi1-xYx)FeO3 powders were studied at room temperature by VSM. The particle size systematically decreases with the Y percentage. Ferromagnetic curves were obtained at room temperature for Y-percentage lower than 20% with relatively large values of the coercive field, Hc, which increases with Y-substitution, while for 20% yttrium a superparamagnetic behavior is observed. The electrical impedance of compressed disks were investigated also by impedance analysis in the range 1Hz-1MHz and the results were successfully fitted by a simple parallel R-C model. The dc-leakage currents are lower than previously reported for (Bi 1-xYx)FeO3 compounds and for most of the doped-BiFeO3 ceramics. As a difference with the influence on the magnetic behavior, the doping with yttrium does not seem to have a large influence on the dielectrical properties. These results suggest that magnetization can be systematically modified by the relatively simple co-precipitation synthesis while keeping invariable the dielectrical properties.© 2014 Elsevier B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09258388_v592_n_p306_Medina
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Bismuth-iron oxides
Impedance analysis
Magnetization
Multiferroic compounds
Yttrium substitution
Coprecipitation method
Coprecipitation synthesis
Dielectric and magnetic properties
Dielectrical properties
Impedance analysis
Magnetization curves
Multiferroics
Superparamagnetic behavior
Bismuth
Bismuth compounds
Coprecipitation
Electric impedance
Iron oxides
Leakage currents
Magnetization
Sol-gels
Yttrium
Yttrium compounds
Yttrium alloys
spellingShingle Bismuth-iron oxides
Impedance analysis
Magnetization
Multiferroic compounds
Yttrium substitution
Coprecipitation method
Coprecipitation synthesis
Dielectric and magnetic properties
Dielectrical properties
Impedance analysis
Magnetization curves
Multiferroics
Superparamagnetic behavior
Bismuth
Bismuth compounds
Coprecipitation
Electric impedance
Iron oxides
Leakage currents
Magnetization
Sol-gels
Yttrium
Yttrium compounds
Yttrium alloys
Medina, L.M.S.
Jorge, G.A.
Martín Negri, R.
Structural, dielectric and magnetic properties of Bi1 -xYxFeO3 (0 ≤ x ≤ 0.2) obtained by acid-base co-precipitation
topic_facet Bismuth-iron oxides
Impedance analysis
Magnetization
Multiferroic compounds
Yttrium substitution
Coprecipitation method
Coprecipitation synthesis
Dielectric and magnetic properties
Dielectrical properties
Impedance analysis
Magnetization curves
Multiferroics
Superparamagnetic behavior
Bismuth
Bismuth compounds
Coprecipitation
Electric impedance
Iron oxides
Leakage currents
Magnetization
Sol-gels
Yttrium
Yttrium compounds
Yttrium alloys
description Bismuth-iron oxides with partial substitution of bismuth by yttrium, referred as (Bi1-xYx)FeO 3, were synthesized by simple-low cost acid-base co-precipitation method, which constitutes a difference with the currently used synthetic methods for obtaining BiFeO3-doped compounds (e.g. polymer assisted sol-gel, solid state, microwave, etc.) Samples were characterized by XRD, EDS, SEM, TEM, DSC and FTIR. The influence of yttrium (Y) substitution on magnetization curves of (Bi1-xYx)FeO3 powders were studied at room temperature by VSM. The particle size systematically decreases with the Y percentage. Ferromagnetic curves were obtained at room temperature for Y-percentage lower than 20% with relatively large values of the coercive field, Hc, which increases with Y-substitution, while for 20% yttrium a superparamagnetic behavior is observed. The electrical impedance of compressed disks were investigated also by impedance analysis in the range 1Hz-1MHz and the results were successfully fitted by a simple parallel R-C model. The dc-leakage currents are lower than previously reported for (Bi 1-xYx)FeO3 compounds and for most of the doped-BiFeO3 ceramics. As a difference with the influence on the magnetic behavior, the doping with yttrium does not seem to have a large influence on the dielectrical properties. These results suggest that magnetization can be systematically modified by the relatively simple co-precipitation synthesis while keeping invariable the dielectrical properties.© 2014 Elsevier B.V. All rights reserved.
format JOUR
author Medina, L.M.S.
Jorge, G.A.
Martín Negri, R.
author_facet Medina, L.M.S.
Jorge, G.A.
Martín Negri, R.
author_sort Medina, L.M.S.
title Structural, dielectric and magnetic properties of Bi1 -xYxFeO3 (0 ≤ x ≤ 0.2) obtained by acid-base co-precipitation
title_short Structural, dielectric and magnetic properties of Bi1 -xYxFeO3 (0 ≤ x ≤ 0.2) obtained by acid-base co-precipitation
title_full Structural, dielectric and magnetic properties of Bi1 -xYxFeO3 (0 ≤ x ≤ 0.2) obtained by acid-base co-precipitation
title_fullStr Structural, dielectric and magnetic properties of Bi1 -xYxFeO3 (0 ≤ x ≤ 0.2) obtained by acid-base co-precipitation
title_full_unstemmed Structural, dielectric and magnetic properties of Bi1 -xYxFeO3 (0 ≤ x ≤ 0.2) obtained by acid-base co-precipitation
title_sort structural, dielectric and magnetic properties of bi1 -xyxfeo3 (0 ≤ x ≤ 0.2) obtained by acid-base co-precipitation
url http://hdl.handle.net/20.500.12110/paper_09258388_v592_n_p306_Medina
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