Investigations on the properties of pure and rare earth modified bismuth ferrite ceramics

• Published in: Journal of alloys and compounds 2010-03, Vol.493 (1), p.569-572
• Main Authors: Kazhugasalamoorthy, S., Jegatheesan, P., Mohandoss, R., Giridharan, N.V., Karthikeyan, B., Joseyphus, R. Justin, Dhanuskodi, S.
• Format: Article
• Language: English
• Subjects: BiFeO 3; Ceramics; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric properties of solids and liquids; Dielectric: Magnetic measurements; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Domain effects, magnetization curves, and hysteresis; Exact sciences and technology; Ferroelectric; Magnetic properties and materials; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Multiferroics; Permittivity (dielectric function); Physics
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2009.12.157

Pure BiFeO 3 (BFO) and La-modified BiFeO 3 (Bi 1− x La x FeO 3 with x = 0.2 and 0.4) ceramic powders were synthesized at relatively low temperature by ferrioxalate precursor method. Pure compositions did not yield phase pure powders and contain secondary phases. At the same time, La-modification at different concentration levels in BFO promoted the formation of perovskite phase with the elimination of secondary phases and phase pure ceramic powders were obtained for the composition Bi 1− x La x FeO 3 with x = 0.4. Further, the effect of lanthanum substitution on the morphology, electrical and magnetic properties was also investigated.