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Size dependent morphology, magnetic and dielectric properties of BiFeO3 nanoparticles

Published online by Cambridge University Press:  08 April 2019

Nidhi Sheoran*
Affiliation:
Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal131039, Haryana, India.
Monika Saini
Affiliation:
Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal131039, Haryana, India.
Ashok Kumar
Affiliation:
Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal131039, Haryana, India.
Vinod Kumar*
Affiliation:
Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal131039, Haryana, India.
Tanuj Kumar
Affiliation:
Department of Nanosciences and Materials, Central University of Jammu, Jammu and Kashmir, India.
Mukesh Sheoran*
Affiliation:
Department of Physics, Pt. NRS Govt. College, Rohtak, Haryana, India.
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Abstract

Nano-sized BiFeO3 were synthesized by sol-gel auto combustion method and report the effect of different annealing temperature (400 °C, 500 °C, 600 °C) on phase formation, morphology, magnetic and dielectric properties of synthesized bismuth ferrite (BiFeO3) nanoparticles. The phase formation of BFO nanoparticles were confirmed by X-ray diffraction pattern. Further, significant increment in particle size with increasing annealing temperature was estimated by field emission electron microscopy (FESEM). Magnetization curve showed the soft ferromagnetic behavior of the samples annealed at 400 OC and 500 OC that was explained on the basis of disturbance of spiral modulated long range antiferromagnetic order of bulk BFO. Dielectric response revealed decrease in dielectric constant with increasing annealing temperature. BFO is a room-temperature multiferroic material so it is potential candidate for various applications viz. Water waste treatment, gas sensors and photovoltaic cells in rural areas.

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Articles
Copyright
Copyright © Materials Research Society 2019 

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