Effects of Nd and Co co-doping on phase, microstructure and ferromagnetic properties of bismuth ferrite ceramics

In this work, the samples of Bi0.95Nd0.05CoxFe1-xO3(BNFCO) with x=0, 0.03, 0.05 and 0.07 mol fraction, were prepared by a solid state reaction. The effect of Nd and Co co-doping concentration on phase, densification, microstructure and ferromagnetic properties were examined. The BNFCO powders were p...

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Bibliographic Details
Main Authors: Pornchanok Lawita, Pasinee Siriprapa, Anucha Watcharapasorn, Sukanda Jiansirisomboon
Format: Journal
Published: 2018
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Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84875733609&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/52328
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Institution: Chiang Mai University
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Summary:In this work, the samples of Bi0.95Nd0.05CoxFe1-xO3(BNFCO) with x=0, 0.03, 0.05 and 0.07 mol fraction, were prepared by a solid state reaction. The effect of Nd and Co co-doping concentration on phase, densification, microstructure and ferromagnetic properties were examined. The BNFCO powders were prepared using a mixed-oxide method and calcined at 800 °C for 2 h before being pressed and sintered at various temperatures in the range of 825-900 °C for 2 h. An increase in Co co-doping content increased density of the ceramics. Phase analysis by X-ray diffraction indicated the existence of rhombohedral phase for all BNFCO powders and ceramics. Microstructural investigation using the scanning electron microscope showed a reduction of grain size with increasing Co content. Magnetic hysteresis loops showed that remanent magnetization and coercive magnetic field of the Co-doped samples were improved. © 2012 Elsevier Ltd and Techna Group S.r.l.