Optical properties of TiC/sub x/ (0. 64< or =x< or =0. 90) from 0. 1 to 30 eV
Journal Article
·
· Phys. Rev., B: Condens. Matter; (United States)
The stoichiometry-dependent optical properties of bulk samples of TiC/sub x/ have been determined for four samples in the range 0.64< or =x< or =0.90. Reflectance and absorptance data taken in the range 0.1--30 eV have been Kramers-Kronig analyzed to obtain the dielectric function and related functions. Interband absorption begins at 0.1 eV or less. The observed interband transitions are interpreted on the basis of existing energy-band calculations. Comparison of optical structure with joint-density-of-states calculations shows that the rigid-band model cannot be applied strictly to explain the x-dependent structure, especially in the 5--10 eV region. The electron-energy-loss functions exhibit two peaks, one near the free-electron plasmon energy and one near 10 eV, both peaks shifting to higher energy as x increases.
- Research Organization:
- Ames Laboratory, U.S. Department of Energy and Department of Physics, Iowa State University, Ames, Iowa 50011
- OSTI ID:
- 5012600
- Journal Information:
- Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 22:8; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSORPTIVITY
BAND THEORY
CARBIDES
CARBON COMPOUNDS
CORRELATIONS
DATA
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
ENERGY DEPENDENCE
ENERGY RANGE
ENERGY-LEVEL DENSITY
ENERGY-LEVEL TRANSITIONS
EV RANGE
EV RANGE 01-10
EV RANGE 10-100
EXPERIMENTAL DATA
INFORMATION
KRAMERS-KRONIG CORRELATION
MILLI EV RANGE
NUMERICAL DATA
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMONS
QUANTITY RATIO
QUASI PARTICLES
REFLECTIVITY
SURFACE PROPERTIES
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSORPTIVITY
BAND THEORY
CARBIDES
CARBON COMPOUNDS
CORRELATIONS
DATA
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
ENERGY DEPENDENCE
ENERGY RANGE
ENERGY-LEVEL DENSITY
ENERGY-LEVEL TRANSITIONS
EV RANGE
EV RANGE 01-10
EV RANGE 10-100
EXPERIMENTAL DATA
INFORMATION
KRAMERS-KRONIG CORRELATION
MILLI EV RANGE
NUMERICAL DATA
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMONS
QUANTITY RATIO
QUASI PARTICLES
REFLECTIVITY
SURFACE PROPERTIES
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS