FTIR Study of Nanostructure Perovskite BaTiO3 Doped with Both Fe3+ and Ni2+ Ions Prepared by Sol-Gel Technique
A. Abdel Aala, T.R. Hammada, M. Zawrahb, I.K. Battishac and A.B. Abou Hammadc
aHelwan University, Physics Department, Helwan, Cairo, Egypt
bNational Research Center (NRC), Ceramic Department, Doky, Giza, Egypt
cNational Research Center (NRC), Solid State Physics Department, Doky, Giza, Egypt
Received: November 10, 2012; In final form: March 16, 2014
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Pure barium titanate BaTiO3 (BT) and BT doped with two different transition elements Fe3+ and Ni2+ at 5 mol.% (BT5Fe and BT5Ni, respectively) as constant concentration in powder form have been prepared by sol-gel method using barium acetate, titanium(IV) n-butoxide, iron and nickel nitrates as precursor materials. The microstructure of BT and the influence of Fe and Ni dopants on it were investigated by X-ray diffraction and Fourier transform infrared spectroscopy. X-ray diffraction shows that tetragonal phase is dominant for pure BT sintered for 4 h at 800°C. Scanning electron microscopy and transmission electron microscopy were used to study surface morphology and particle size distribution for BT5Fe and BT5Ni, respectively. The presence of hydroxyl defects were verified by Fourier transform infrared spectroscopy for (BaTi1-xFexO3-x/2) (BTxFe), where x=0.005, 0.01, 0.05, and 0.07 and (BaTi1-xNixO3-x/2) (BTxNi), where x=0.005, 0.01, 0.03, 0.05, and 0.07.

DOI: 10.12693/APhysPolA.126.1318
PACS numbers: 81.20.Fw, 81.07.Bc, 81.20.Fw, 64.70.kg, 61.05.C-, 78.30.Ly, 81.10.Aj