<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Nanocrystalline multiferroic BiFeO3 ceramics was prepared by a novel solution combustion method (SCM). The X-ray diffraction (XRD) studies on structural properties of the synthesized ceramics reveal that the BiFeO3 ceramics has rhombhohedral perovskite structure with an average crystallite size of 15 nm. The ferroelectric P-E hysteresis loop measurement at room temperature shows unsaturated behavior with a partial reversal of polarization. Investigations on temperature dependence of dielectric constant in BiFeO3 demonstrate a clear dielectric anomaly at approximately around 380 °C, which corresponds to antiferromagnetic to paramagnetic phase transition (TN) and also evidences a possible coupling among the electric and magnetic dipoles of BiFeO3. A room temperature variation of dielectric constant “ɛ” and dielectric loss “tan δ” as a function of frequency in the range of 100 Hz — 1 MHz, confirms that both dielectric constant and loss are strong functions of frequency.</p></abstract>

Nanocrystalline multiferroic BiFeO3 ceramics was prepared by a novel solution combustion method (SCM). The X-ray diffraction (XRD) studies on structural properties of the synthesized ceramics reveal that the BiFeO3 ceramics has rhombhohedral perovskite structure with an average crystallite size of 15 nm. The ferroelectric P-E hysteresis loop measurement at room temperature shows unsaturated behavior with a partial reversal of polarization. Investigations on temperature dependence of dielectric constant in BiFeO3 demonstrate a clear dielectric anomaly at approximately around 380 °C, which corresponds to antiferromagnetic to paramagnetic phase transition (TN) and also evidences a possible coupling among the electric and magnetic dipoles of BiFeO3. A room temperature variation of dielectric constant “ɛ” and dielectric loss “tan δ” as a function of frequency in the range of 100 Hz — 1 MHz, confirms that both dielectric constant and loss are strong functions of frequency.

Ferroelectric and dielectric properties of nanocrystalline BiFeO3 multiferroic ceramics synthesized by solution combustion method (SCM)

Department of Physics, School of Physical Sciences, North Maharashtra University, Jalgaon, 425 001, M.S, India

Department of Engineering Sciences and Humanities (DESH), SRTTC-FOE, Kamshet, Pune, 410 405, M.S, India

Department of Engineering Sciences and Humanities (DESH), Vishwakarma Institute of Technology (VIT), Pune, 411 037, M.S, India

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Nanocrystalline multiferroic BiFeO3 ceramics was prepared by a novel solution combustion method (SCM). The X-ray diffraction (XRD) studies on structural...

Ferroelectric and dielectric properties of nanocrystalline BiFeO3 multiferroic ceramics synthesized by solution combustion method (SCM)

Publié en ligne: 20 avr. 2013

Pages: 221 - 225

DOI: https://doi.org/10.2478/s13536-012-0088-y

Mots clés
BiFeO3 ceramics, solution combustion method, X-ray diffraction, ferroelectric properties, dielectric properties

© 2013 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Ferroelectric and dielectric properties of nanocrystalline BiFeO3 multiferroic ceramics synthesized by solution combustion method (SCM)

Publié en ligne: 20 avr. 2013

Pages: 221 - 225

DOI: https://doi.org/10.2478/s13536-012-0088-y

Mots clésBiFeO3 ceramics, solution combustion method, X-ray diffraction, ferroelectric properties, dielectric properties

© 2013 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
BiFeO3 ceramics, solution combustion method, X-ray diffraction, ferroelectric properties, dielectric properties