Silver thiogallate single crystal layers epitaxially grown from potassium chloride-silver thiogallate solution
AssigneeHughes Aircraft Company
InventorsSanat K. Sashital, Robert L. Joyce, Anthony L. Gentile
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Abstract
A method of making a thin, high purity single crystal layer of silver thiogallate. According to the preferred embodiment of this method, a seed crystal substrate of silver thiogallate is dipped into a molten solution of silver thiogallate dissolved in potassium chloride. Upon slowly cooling the solution, the thin layer of single crystal silver thiogallate forms on the substrate. Upon removal, very little of the potassium chloride adheres to the surface, and what does adhere to the surface can be easily removed by washing the surface with hot water.
Claims9
A method of making a single crystal of silver thiogallate comprising the steps of:
- (a) preparing a liquid solution of silver thiogallate in potassium chloride;
- (b) placing in the solution a seed crystal which has a proper lattice parameter relationship with silver thiogallate;
- and
- (c) slowly cooling the solution to form on the seed crystal a thin layer of a single crystal of silver thiogallate.
A method of making a single crystal of silver thiogallate comprising the steps of:
- (a) preparing a liquid solution of silver thiogallate in potassium chloride, with the concentration of the silver thiogallate being in the range between about 2 and 98 mole %, and the solution temperature being between about 735.degree. and about 995.degree. C.;
- (b) placing in the solution a seed crystal of silver thiogallate;
- and
- (c) slowly cooling the solution at a rate ranging between about 0.02.degree. C. per minute and about 0.20.degree. C. per minute to form on the seed crystal a thin layer of a single crystal of silver thiogallate.
Dependencies are inferred from the claim text.