Modifications in the phase transition properties of predeposited VO/sub 2/ films
Journal Article
·
· J. Vac. Sci. Technol., A; (United States)
Thin films of the phase transition material vanadium dioxide (VO/sub 2/) were deposited by thermal oxidation of e-beam evaporated vanadium on a variety of bulk materials. Substrate effects on transition temperature are confirmed as being due to a mismatch between film and substrate thermal expansion coefficients. Decreasing tensile stress results in a lowering of VO/sub 2/ transition temperature. Effects of low-energy Ar/sup +/ bombardment on the electrical and optical properties of these predeposited VO/sub 2/ films were investigated. Bombardment energies in the range 138--500 eV at 1.0--1.3 mA/cm/sup 2/ for 120--180 s were provided by a Commonwealth Millatron. The higher Ar/sup +/ energies resulted in collapse of the VO/sub 2/ optical transmittance hysteresis loop, while low-energy Ar/sup +/ ions caused both a downward shift in the transition temperature and a decrease in hysteresis loop width, suggesting a dependence of these quantities on intrinsic stress. In addition, large decreases in cold-state resistivity are reported and attributed to a reduction of the surface oxide by the low energy argon beam.
- Research Organization:
- LTV Aerospace and Defense Company, Vought Missiles and Advanced Programs Division, Research Department, Dallas, Texas 75265
- OSTI ID:
- 6223979
- Journal Information:
- J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 2:4; ISSN JVTAD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360605* -- Materials-- Radiation Effects
ARGON IONS
BEAMS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
COLLISIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON BEAMS
ELEMENTS
ENERGY RANGE
EV RANGE
EVAPORATION
EXPANSION
HYSTERESIS
ION COLLISIONS
IONS
LEPTON BEAMS
LIGHT TRANSMISSION
MECHANICAL PROPERTIES
METALS
OPTICAL PROPERTIES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLE BEAMS
PHASE STUDIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
STRESSES
TENSILE PROPERTIES
THERMAL EXPANSION
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
VACUUM EVAPORATION
VANADIUM
VANADIUM COMPOUNDS
VANADIUM OXIDES
360605* -- Materials-- Radiation Effects
ARGON IONS
BEAMS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
COLLISIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON BEAMS
ELEMENTS
ENERGY RANGE
EV RANGE
EVAPORATION
EXPANSION
HYSTERESIS
ION COLLISIONS
IONS
LEPTON BEAMS
LIGHT TRANSMISSION
MECHANICAL PROPERTIES
METALS
OPTICAL PROPERTIES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLE BEAMS
PHASE STUDIES
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
STRESSES
TENSILE PROPERTIES
THERMAL EXPANSION
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
VACUUM EVAPORATION
VANADIUM
VANADIUM COMPOUNDS
VANADIUM OXIDES