Accession Number : AD0713022

Title :   INVESTIGATION OF THE INFLUENCE OF DEFECTS IN THIN METALLIC FILMS ON THEIR OPTICAL AND ELECTRICAL PROPERTIES.

Descriptive Note : Final technical rept.,

Corporate Author : PARIS UNIV (FRANCE) LABORATOIRE D'OPTIQUE

Personal Author(s) : Abeles,F. ; Couzineau,M. M. ; Theye,M. L.

Report Date : OCT 1970

Pagination or Media Count : 33

Abstract : The purpose of the present work was to determine the optical properties of thin Ag films and to investigate the influence of their crystallographic structure on these properties. The film surfaces were certainly flatter and smoother than the surface of usual optical samples, which is important in order to prevent surface effects. The optical results can be summarized as follows: A low value of the optical mass, independent of the film structure, was found (0.87); The optical relaxation time strongly depends on the film structure, and is always smaller than the electrical relaxation time (approximately 2); The onset of interband transitions was accurately determined (3.86 eV); In some cases a supplementary absorption band was observed, peaking at 1.5 eV, certainly related to the presence of impurity or defects centers, and No displacement of the plasmon frequency (at Eta-Omega sub p equal to 3.77 eV) with film structure was observed, only a damping of the resonance peak in the energy loss function IM (1/e) for poor films. (Author)

Descriptors :   (*SILVER, OPTICAL PROPERTIES), (*METAL FILMS, CRYSTAL DEFECTS), DIELECTRIC PROPERTIES, BAND THEORY OF SOLIDS, OSCILLATION, PLASMAS(PHYSICS), VAPOR PLATING, VACUUM APPARATUS, X RAY DIFFRACTION, ELECTRON DIFFRACTION, ELECTRON MICROSCOPY, FRANCE

Subject Categories : Crystallography
      Optics
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE