Accession Number : ADA221762

Title :   Preparation and Characterization of Thin Films Based on Sol-Gel Technique and Development of Spectroscopic Probe for Film Formation and Characterization.

Descriptive Note : Final rept. 1 Jul 87-15 Jul 89,

Corporate Author : HEBREW UNIV JERUSALEM (ISRAEL) DEPT OF INORGANIC AND ANALYTICAL CHEMISTRY

Personal Author(s) : Reisfeld, R.

Report Date : 01 DEC 1989

Pagination or Media Count : 41

Abstract : Thin glass films prepared by the sol-gel method were deposited on glass supports. Divalent cobalt and divalent copper were used as optical probes for changes in the glass formation and re-arrangement of the silicate groups during the heat-treatments whereby the cobalt ion initially octahedrally coordinated was transformed into lower coordination as a result of elimination of water and increase of density of the glass. Divalent copper is also effective in infrared absorption and silver particles embedded in the films form narrow-band absorbing filter. Characterization of surfaces of thin films applied in coatings for lasers and laser windows is important in understanding and preventing damage of these materials. (jes)

Descriptors :   *THIN FILMS, ABSORPTION, COATINGS, COBALT, COPPER, DENSITY, DEPOSITION, FILMS, GLASS, INFRARED RADIATION, IONS, LASERS, OPTICAL EQUIPMENT, PARTICLES, PROBES, SILICATES, SILVER, SPECTROSCOPY, SUPPORTS, SURFACES, VALENCE, WATER, WINDOWS.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE