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Pure BiFeO3 nanoparticles were synthesized by a simple sol-gel method namely modified Pechini method. The nanoparticles were calcinated at four different temperatures (450°C, 550°C, 650°C, 750°C). Requirement for extra washing step for impurity phase reduction has been eliminated by elongation of the drying duration at oven from 12 hours to 28 hours along with intermediate grinding. FESEM and X-ray...
Ba and Mn doped BiFeO3 nanoparticles were synthesized by sol-gel method. X-ray diffraction and Raman spectroscopy results showed the presence of distorted rhombohedral structure for Bi0.85Ba0.15FeO3 nanoparticles and the substitution induced phase transition (rhombohedral to orthorhombic) phase for Bi0.85Mn0.15FeO3 nanoparticles. FESEM images of both the samples revealed grain size in the range from...
The multiferroic materials BiFeO3 nanoparticles of dispersion uniformity were synthesized by the citric acid sol-gel method, using the iron(III) nitrate and bismuth nitrate as the reactants and dilute nitric acid as the catalyst. The physical and chemical characteristics, such as structure, morphology and purity of BiFeO3 nanoparticles were investigated by thermogravimetry- differential scanning calorimetry...
0.57(Bi0.8La0.2)FeO3-0.43PbTiO3 (BLF-PT) ceramics were successfully prepared by sol-gel technique combined with solid-state reaction method. X-ray diffraction (XRD) results revealed that single crystallites with rhombohedral phase could be obtained at 600 °C for 2 h, which is 150 °C lower than that required to prepare single phase material with the same composition from solid-state reactions. The...
0.68BiFeO3-0.32PbTiO3 (BFPT) films were prepared on SiO2/Si and Pt/Ti/SiO2/Si substrates by sol-gel method. The XRD patterns of BFPT films show that BFPT films have good crystalline properties, and there are no other peaks of impure phases except for the peaks of BFPT thin film and the substrates. The thickness of BFPT thin films that annealed at 600? for 10 min was about 860 nm when deposited 8 layers...
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