Combustion synthesis of Sr0.5Ba0.5Nb2O6 and effect of fuel on its microstructure and dielectric properties
作者： P.K. Patro , A.R. Kulkarni , C.S. Harendranath
DOI: 10.1016/S0025-5408(02)01025-5
关键词:
摘要: Nano-sized Sr{sub 0.5}Ba{sub 0.5}Nb{sub 2}O{sub 6} (SBN50) powder has been synthesized, at very short reaction time, for the first time by a novel combustion method. Ba(NO{sub 3}){sub 2} and Sr(NO{sub were used as source of Sr Ba, respectively, while Nb-oxalate was niobium. Urea, hexamethyltetramine (HMT) glycine fuel. The crystallite sizes in ranged between 14-125 nm. X-ray diffraction analysis showed complete SBN50 phase formation 700 deg. C, when urea/HMT fuel, 800 C Ferroelectric-paraelectric transition temperature (T{sub c}) close to 40 observed urea HMT T{sub c} -49 used. When fuel highest dielectric constant pellets sintered 1250 4 h. Low loss Larger grain
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