The thermochromic vanadium dioxide. I. Role of stresses and substitution on switching properties

Journal Article · Mon Mar 01 00:00:00 EST 1993 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1006/jssc.1993.1081· OSTI ID:6206206

Rakotoniaina, J C ^[1]; Mokrani-Tamellin, R; Gavarri, J R ^[2]; Vacquier, G; Casalot, A ^[3]; Calvarin, G ^[4]

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1. Universite de Toulon et du Var, La Garde (France) Universite de Provence, Marseille (France)
2. Universite de Toulon et du Var, La Garde (France)
3. Universite de Provence, Marseille (France)
4. Ecole Centrale des Arts et Manufactures, Chatenay-Malabry (France)

The monoclinic [Leftrightarrow] tetragonal transition occurring at 341 K for VO[sub 2] vanadium dioxide and the corresponding switching of the optical properties can be affected in various ways by thermal treatments, substitution, and pressure. The transition in pure or substituted powdered samples is characterized by thermal analysis (DSC), X-ray (XRD) and neutron (NRD) diffractions, and infrared spectroscopy (IR). The influence of pressure on the transition is discussed from neutron diffraction experiments at high pressure. The anisotropic compressibility coefficients in the monoclinic and tetragonal phases are considered. Some kinetic effects close to [Tc], the transition temperature, have been observed by X-ray diffraction. The influences of pressure and substitution on the transition are then interpreted from a classical description of the chemical bonds in VO[sub 2]. 38 refs., 8 figs., 4 tabs.

• OSTI ID: 6206206
• Journal Information: Journal of Solid State Chemistry; (United States), Vol. 103:1; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
VANADIUM OXIDES
PHASE TRANSFORMATIONS
ABSORPTION SPECTROSCOPY
CALORIMETRY
MATHEMATICAL MODELS
MEDIUM PRESSURE
MONOCLINIC LATTICES
NEUTRON DIFFRACTION
OPTICAL PROPERTIES
PRESSURE DEPENDENCE
STRESSES
TETRAGONAL LATTICES
THERMAL ANALYSIS
TRANSITION TEMPERATURE
VERY HIGH PRESSURE
X-RAY DIFFRACTION
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SPECTROSCOPY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies
360204 - Ceramics
Cermets
& Refractories- Physical Properties