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Low temperature preparation; nanocrystalline solid solution; Sr_𝑥Ba_1–𝑥Nb₂O₆.

Sr_𝑥Ba_1–𝑥Nb₂O₆ (with 𝑥 = 0.4, 0.5 and 0.6) powders have been prepared by thermolysis of aqueous precursor solutions consisting of triethanolamine (TEA), niobium tartarate and, EDTA complexes of strontium and barium ions. Complete evaporation of the precursor solution by heating at ∼ 200°C, yields in a fluffy, mesoporous carbon rich precursor material, which on calcination at 750°C/2 h has resulted in the pure SBN powders. The crystallite and average particle sizes are found to be around 15 nm and 20 nm, respectively.

Asit B Panda¹ Amita Pathak¹ Panchanan Pramanik¹

1. Department of Chemistry, Indian Institute of Technology, Kharagpur 721 302, India

Published

November 2002