期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：10
页码：17034
DOI：10.15680/IJIRSET.2014.0310087
出版社：S&S Publications
摘要：Bismuth ferrite nano particles were prepared by sol-gel route using solutions of iron nitrateand bismuthnitrate. The produced powder was dried at 150ºC for 2 h and then calcined at various temperatures for 2 h as well.XRDwas used tostudy the structure of BiFeO3Nanoparticles, it is found that the grain size were about 12.8, 39.9 and47.6nmas calculated usingScherrer equation for samples calcined at 450˚C, 500 ºC and 550 ºC for 2 h respectively, thisexplain that grain size increase with increase in temperature and XRD too showed that besides the formation of singlephase BiFeO3 an impurity phase was also observed.From diagnosis of samples, we foundthat BiFeO3haverhombohedral structure. Scanning electron microscope (SEM) surface morphology study indicatedabetter homogeneitywith fine grain morphology besides the formation of single phase BiFeO3 an impurity phase. Less impurity phases wasfound in sample calcined at 450 ˚C. Atomic force microscope (AFM) declare that it hashomogenous particledistribution and coarseness of surface with change of particles to spherical form with dimension of 1.21nm,alsoGranularity Cumulation Distribution Report for same sample found that average diameter is equal to 45.31 nm.Finally the electrical properties resultsofBiFeO3such asthe dielectric constant , tangent loss and electrical resistivity andconductivitywere studied at different applied frequencies.
