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Multiferroic and optical studies on the effects of Ba2+ ions in BiFeO3 nanoparticles by Manpreet Kaur; K. L. Yadav; Poonam Uniyal is a Materials Science article available to read on EtoBox.

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Single phase Ba 2? ions doped BiFeO 3 nanoparticles have been successfully synthesized with varied concentration (0.0 B x B 0.2) using the auto combustion method. The structural properties of Bi 1-x Ba x FeO 3 (x-0.0, 0.1 and 0.2) nanoparticles reveal the formation of highly crystalline rhombohedrally distorted perovskites without undergoing any structural phase transformation analyzed via Rietveld refinement. The Pauling's equation confirmed that Ba 2? ions doped BiFeO 3 ceramics have much more negative enthalpy of formation (DH f ) than undoped BiFeO 3 . A reduction of particle size has been observed up to x = 0.1 and then after increases, whereas the band gap shows a reverse trend. Magnetic and ferroelectric transition temperatures are found to be slightly shifted towards the lower temperature up to x = 0.1 and then higher temperature side which could be attributed to the particle size effect. Ba 2? doped BiFeO 3 ceramic with concentration x = 0.2 exhibit larger magnetization as compared to others at room temperature, but these magnetization curves were not saturated. Remnant polarization is found to decrease from 7.693 to 5.141 lC/cm 2 along with the doping of Ba 2? ions. The o

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Author

Manpreet Kaur; K. L. Yadav; Poonam Uniyal

Published

2016

Language

EN

Field

Materials Science (Physical Sciences)