Optical properties of diffusion-formed Au/sub 2/Al
Journal Article
·
· J. Appl. Phys.; (United States)
Ellipsometric measurements have been made on the intermetallic compound Au/sub 2/Al to determine the optical constants for photon energies between 0.6 and 3.7 eV. Polycrystalline samples were prepared by the interdiffusion between evaporated thin fils of Au and Al. The optical properties are characteristic of a metallic conductor with an interbrand threshold of about 0.8 eV. The results are compared with optical data for Au, Al and AuAl/sub 2/, and with x-ray photoeletron and soft x-ray emission spectra for Au/sub 2/Al. As compared with pure gold, it is concluded that interband adsorption is greatly enhance relative to the free-carrier absorption and that d-band electrons do not contribute significantly to the absorption observed below 3.7 eV.
- Research Organization:
- Department of Physics, Osaka Kyoiku University, Tennoji, Osaka 543, Japan
- OSTI ID:
- 6263603
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 52:9; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ABSORPTION
ALLOYS
ALUMINIUM ALLOYS
CHARGE CARRIERS
CHEMICAL ANALYSIS
COMPARATIVE EVALUATIONS
CRYSTALS
DIFFUSION
ELECTRON EMISSION
ELEMENTARY PARTICLES
ELLIPSOMETRY
EMISSION
ENERGY DEPENDENCE
ENERGY LEVELS
EVAPORATION
FILMS
GOLD ALLOYS
GOLD BASE ALLOYS
INTERMETALLIC COMPOUNDS
MASSLESS PARTICLES
MEASURING METHODS
NONDESTRUCTIVE ANALYSIS
OPTICAL PROPERTIES
PHASE TRANSFORMATIONS
PHOTOELECTRIC EMISSION
PHOTONS
PHYSICAL PROPERTIES
POLYCRYSTALS
SPECTRA
SYNTHESIS
X-RAY EMISSION ANALYSIS
X-RAY SPECTRA
360104* -- Metals & Alloys-- Physical Properties
ABSORPTION
ALLOYS
ALUMINIUM ALLOYS
CHARGE CARRIERS
CHEMICAL ANALYSIS
COMPARATIVE EVALUATIONS
CRYSTALS
DIFFUSION
ELECTRON EMISSION
ELEMENTARY PARTICLES
ELLIPSOMETRY
EMISSION
ENERGY DEPENDENCE
ENERGY LEVELS
EVAPORATION
FILMS
GOLD ALLOYS
GOLD BASE ALLOYS
INTERMETALLIC COMPOUNDS
MASSLESS PARTICLES
MEASURING METHODS
NONDESTRUCTIVE ANALYSIS
OPTICAL PROPERTIES
PHASE TRANSFORMATIONS
PHOTOELECTRIC EMISSION
PHOTONS
PHYSICAL PROPERTIES
POLYCRYSTALS
SPECTRA
SYNTHESIS
X-RAY EMISSION ANALYSIS
X-RAY SPECTRA