Results 171 to 180 of about 8,251 (220)

Theory of vanadium dioxide

Synthetic Metals, 1991
Abstract A spin-Peierls theory is presented for vanadium dioxide (VO2) below the metal-insulator transition temperature using a Peierls-Hubbard model. We find that VO2 is in the intermediate-to-strong-coupling regime by performing an exact numerical diagonalization on a finite-size chain.
Jia Shi, Robijn Bruinsma, Alan R Bishop
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Dielectric behaviour of vanadium dioxide

Physica Status Solidi (a), 1978
The dielectric constant and conductivity of VO2 single crystals are measured in the frequency range 30 to 105 Hz and in the temperature range 77 to 250 K. Measurements are also made at 300 K in the frequency range 15 × 103 to 2 × 106 Hz. It is shown that the dielectric behaviour over these ranges is described by a Debye-type relaxation process with a ...
A. Mansingh, R. Singh, M. Sayer
openaire   +1 more source

Stoichiometry of vanadium dioxide

Journal of Materials Science Letters, 1986
On propose des expressions pour la relation entre la temperature et les pressions partielles d'oxygene a l'equilibre pour les systemes VO 2 −V 6 O 13 et VO 2 −V n O 2n ...
J. F. Marucco, B. Poumellec, F. Lagnel
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Quasiparticle band structure of vanadium dioxide

Journal of Physics: Condensed Matter, 2009
Vanadium dioxide is insulating below 340 K in experiments, whereas the band structure calculated in the local density approximation (LDA) is gapless. We study the self-energy effects using the ab initio GW method. We found that the self-energy depends strongly on the energy, and proper treatment of the dynamical effect is essential for getting precise ...
R, Sakuma, T, Miyake, F, Aryasetiawan
openaire   +2 more sources

The Stability Study on Vanadium Dioxide

Advanced Materials Research, 2015
Vanadium dioxide (VO2) has attracted much interest in material field due to its unique semiconductor-metal phase transition properties. And now, the problem of stability has been highlighted and concerned for the practical application in VO2. In order to establish a relatively complete guide of stability study on VO2 which would contribute to deeply ...
Dan Xia Li   +3 more
openaire   +1 more source

Magnetic Susceptibility of Vanadium Dioxide

Nature, 1954
WE have found that the reduction of vanadium pentoxide (V2O5) as described below gives a form of vanadium oxide (VO2) which has not the magnetic discontinuity (at 341° K.) reported in the literature1,2.
M. S. ARCHER   +2 more
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Optical properties of vanadium dioxide and vanadium pentoxide thin films

Applied Optics, 1991
Several oxides of vanadium undergo a transition from a semiconductor or insulating state to a metal phase at a critical temperature. Vanadium dioxide undergoes this transition near 68 degrees C, while V(2)O(5) undergoes a similar phase transition near 257 degrees C.
openaire   +2 more sources

Vanadium Dioxide for Selector Applications

ECS Meeting Abstracts, 2013
Abstract not Available.
Iuliana P. Radu   +17 more
openaire   +1 more source

Crystal growth of vanadium dioxide

Materials Research Bulletin, 1970
Abstract The phase diagram of the V-O system at 1500°K has been re-examined (mainly in the VO2 region) and vanadium dioxide crystals have been grown from vanadium pentoxide (M.P. about 950°K) under various oxygen partial pressures. The total pressure was one atm. The chemical analyses of these oxides indicated the stability range of VO2+x from x=0.00
Noboru Kimizuka   +2 more
openaire   +1 more source

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