Phase Transition in VO₂

On optical properties of phosphate glass thin films

“…So, we can assure that the dimensions of these "domains" increase when the heating rate increases. As shown in several previous studies , microcracks in thin films are due to thermal expansion mismatch with substrate [11]. The abovementioned aspect is evident at a higher magnification (5000×) .…”

Conductivity stabilization by metal and oxide additives in ceramics on the basis of VO2 and glass V2O5–P2O5

“…Crystalline distortion at phase transition in VO 2 [2,8] is the reason of instability. Distortion accompanied by a discontinuous volume change [9] generates the mechanical stresses which lead to the formation of microcracks [7,10]. The microcracks produce the irreversible change in the properties of VO 2 single crystals and VO 2 -based materials.…”

Accurate X-ray determination of the lattice parameters and the thermal expansion coefficients of VO2near the transition temperature

“…Kawakubo & Nagakawa (1964) reported the coefficients of linear expansion to be 6.4 × 10 -° K-1 and 17-1 × 10-6 K -1, for the monoclinic and tetragonal phases respectively, determined by an optical-lever dilatometer. They also noticed a marked volume expansion through T,.…”