Molten Salt Synthesis and Structural Characterization of BaTiO3 Nanocrystal Ceramics

International Conference on Advanced Materials for Better Future 2016

Ahda, S.^1 ; Misfadhila, S.^2 ; Parikin, P.^1 ; Putra, T.Y.S.P.^1

Center for Science and Technology of Advanced Materials, National Nuclear Energy Agency, Serpong, Indonesia^1

Andalas University, Padang Sumbar, Indonesia^2

关键词: Molten salt method;    Molten salt synthesis;    Nanocrystallines;    Piezoelectric characteristics;    Sintering temperatures;    Structural characterization;    Structural information;    Tetragonal perovskites;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/176/1/012048/pdf
DOI  :  10.1088/1757-899X/176/1/012048

来源: IOP

【 摘 要 】

A new synthesis route to obtain high-purity barium titanate powder, BaTiO3, using the molten salt method by reacting the raw materials (BaCO3and TiO2) in an atmosphere of molten NaCl and KCl, has been developed. The synthesized BaTiO3ceramic particles have been successfully carried out at the sintering temperature 950°C for 4 hours. The Rietveld refinement of the XRD diffraction patterns was employed to characterize the structural information of the nanocrystalline BaTiO3ceramics. The lattice parameters (a=4.0043 Å, b=4.0308Å with space group P4mm) of tetragonal perovskite structure, as an indication of piezoelectric characteristics, have been successfully determined by the Rietveld refinement. While the crystallitte particle size and strains have been obtained for the values of 110.6 nm and 0.74 % respectively.