Sol-gel processing of oriented PbTiO3 thin films with lead acetylacetonate as the lead precursor

Sol-gel lead titanate thin films were spin-coated onto MgO(100), platinum-coated silicon, SrTiO3(211) and SrTiO3(100) substrates. This method uses lead acetylacetonate as the lead precursor instead of the widely used lead acetate trihydrate, along with titanium iso-propoxide. The use of lead acetyla...

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Bibliographic Details
Published in:Materials letters 1994-06, Vol.20 (1-2), p.71-74
Main Authors: ULAGARAJ SELVARAJ, PRASADARAO, A. V, SRIDHAR KOMARNENI
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Liquid phase epitaxy
deposition from liquid phases (melts, solutions, and surface layers on liquids)
Materials science
Methods of deposition of films and coatings
film growth and epitaxy
Physics
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Summary:Sol-gel lead titanate thin films were spin-coated onto MgO(100), platinum-coated silicon, SrTiO3(211) and SrTiO3(100) substrates. This method uses lead acetylacetonate as the lead precursor instead of the widely used lead acetate trihydrate, along with titanium iso-propoxide. The use of lead acetylacetonate yielded a more stable precursor solution as compared to that of lead acetate trihydrate. Lead titanate crystallised at a temperature as low as 425 C, which is considerably lower than the Curie temperature. Films deposited on various substrates and annealed at 425 C showed different orientations. Typical microstructure studies indicated the presence of submicron grains of the order of 0.1 micron. 15 refs.
ISSN:0167-577X
1873-4979
DOI:10.1016/0167-577X(94)90150-3