Manufacture of .beta.-BaB.sub.2 O.sub.4 film by a sol-gel method

Details Manufacture of .beta.-BaB.sub.2 O.sub.4 film by a sol-gel method Manufacture of .beta.-BaB.sub.2 O.sub.4 film by a sol-gel method

1992-05-20

1994-01-04

Beck, Shrive

Coating processes

Coating has x-ray, ultraviolet, or infrared properties

427240, 4273743, 4273762, 427378, 427379, 4274301, 501 12, B05B 500

Patent

active

052758435

ABSTRACT:
The invention provides a method of preparing .beta.-BaB.sub.2 O.sub.4 thin film. The beta barium boron thin film obtained does not contain impurities but has homogeneous structure, thus being applicable to various industrial fields including integrated circuits. The method of the invention includes the steps of melting and mixing boron alkoxide and metal barium or barium alkoxide in the presence of a solvent to prepare a homogeneous solution, covering a substrate with a thin film of the homogeneous solution or concentrated homogeneous solution, and firing the thin film in an atmosphere containing oxygen in a temperature range higher than 400.degree. C. and lower than 900.degree. C.

REFERENCES:
patent: 4929278 (1990-05-01), Ashley et al.
patent: 4959089 (1990-09-01), Bhargava et al.
"Optical Materials for Laser Frequency Conversion", by Takamoto Sasaki, New Ceramics (1991) No. 4, published Mar. 25, 1991.
"Inorganic Nonlinear Optical Materials", by Takamoto Sasaki, New Ceramics (1991) No. 4, published Mar. 25, 1991.
"Direct Czochralski Growth of .beta.-BaB.sub.2 O.sub.4 Single Crystal Considering Melt Structure", by Hikaru Kouta and Yasuhiko Kuwano. published Feb. 15, 1991.

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