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Low‐Temperature Crystallization of Sol‐Gel Processed Pb 0.5 Ba 0.5 TiO 3 : Powders and Oriented Thin Films
Author(s) -
Pillai Suresh C.,
Boland Stacey W.,
Haile Sossina M.
Publication year - 2004
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2004.tb07744.x
Subject(s) - materials science , crystallization , thin film , barium carbonate , spin coating , sol gel , perovskite (structure) , calcination , analytical chemistry (journal) , x ray crystallography , phase (matter) , barium , mineralogy , chemical engineering , diffraction , nanotechnology , optics , metallurgy , chemistry , biochemistry , physics , chromatography , organic chemistry , engineering , catalysis , raw material
A novel sol‐gel process suitable for depositing thin‐film lead barium titanate has been developed. X‐ray diffraction analysis showed perovskite phase crystallization to occur at a temperature as low as 400°C with single‐phase Pb 0.5 Ba 0.5 TiO 3 (PBT) resulting at a temperature as low as 500°C. Small concentrations of barium carbonate were evident by X‐ray diffraction at 400°C, and indications of minor, carbonate‐containing phases were evident by FTIR at 600°C. Deposition of the sol by spin coating on single‐crystal and thin‐film MgO on silicon resulted in highly oriented PBT films after calcination at 600°C. Mixed (100)/(001) films were obtained on single‐crystal MgO, whereas entirely (100) films were obtained on thin‐film MgO.