Optically useful compositions and a sol-gel process for their pr

Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing

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423598, 423601, 423602, 501 12, 4271263, C01B 2526, C01G 2300, C01G 2802, C03C 300

Patent

active

052814050

ABSTRACT:
A sol-gel process is disclosed for preparing MTiOXO.sub.4 when M is K, Rb, Tl and/or NH.sub.4 and X is P and/or As which involves dissolving suitable compounds of M, Ti and X in stoichiometic amounts in a suitable organic liquid, and then producing crystalline MTiOXO.sub.4 using procedures including hydrolysis, condensation, solidification and pyrolysis. Bulk material and films (e.g., films of KTP on a single crystal silicon substrate) may be produced. Compositions comprising films of said MTiOXO.sub.4 produced by this process are disclosed.

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