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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/911

Title: Molten salt synthesis of complex perovskite-related dielectric oxides
Authors: Thirumal, M
Jain, P
Ganguli, A K
Keywords: Molten salt
Niobates
Tantalates
X-ray diffraction
(XRD)
Scanning electron microscopy (SEM)
Issue Date: 2001
Citation: Materials Chemistry and Physics, 70(1), 7–11
Abstract: Perovskite related dielectric oxides of the formula Ba(Zn1=3Nb2=3)O3, Ba(Mg1=3Nb2=3)O3 and Ba(Zn1=3Ta2=3)O3 have been synthesized by the NaCl–KCl molten salt (flux) method at low temperatures of 900-C for 3 or 6 h. Sintering at 1000-C retained the cubic structure.Sintering at 1300-C generated minor amount (-10%) of Ba5Nb4O15 in addition to the main cubic phase for the niobium compounds.The tantalum compounds, on the other hand, decomposed to Ba0:5TaO3, retaining a minor amount of the original cubic phase. Scanning electron micrographs show large grain size (upto 10mm) in some of the samples obtained by the molten salt method.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/911
Appears in Collections:Chemistry

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