Single-crystal – oriented-crystal – and epitaxy growth processes; – Processes of growth from liquid or supercritical state – Liquid phase epitaxial growth
Patent
1996-07-31
1999-11-30
Utech, Benjamin
Single-crystal, oriented-crystal, and epitaxy growth processes;
Processes of growth from liquid or supercritical state
Liquid phase epitaxial growth
117 68, 117927, 117944, 117947, C30B 1912, C30B 2916, C30B 2924, C30B 2958
Patent
active
059935413
ABSTRACT:
A process for controlling the formation of ceramics, achievable under ambient conditions, includes preparing a crystallization medium of a ceramic parent solution and spreading an organic monolayer of a hydrogen-bonded network on the air-liquid interface of the solution. For the formation of aragonite, the process uses an undoped calcium bicarbonate solution and a hydrogen-bonded network with a structural motif approximately matching a calcium ion distance in the a-c plane of aragonite. The aragonite product formed has a [010] axis approximately perpendicular to the monolayer. For perovskite materials, such as BSTO ceramics, the microstructure of the product is controlled by changing different functional groups of the organic monolayer which has been spread on the surface of a perovskite parent solution.
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Kaplan David L.
Litvin Arkadi L.
Valiyaveettil Suresh
Champagne Donald L.
Utech Benjamin
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