Physical properties of V 1−xTixO2 (0 < x < 0.187) single crystals

Abstract

Free standing, low strain, single crystals of pure and titanium doped VO2 were grown out of an excess of V 2O5 using high temperature solution growth techniques. At TMI ∼ 340 K, pure VO2 exhibits a clear first-order phase transition from a high-temperature paramagnetic tetragonal phase (R) to a low-temperature non-magnetic monoclinic phase (M1). With Ti doping, another monoclinic phase (M2) emerges between the R and M1 phases. The phase transition temperature between R and M2 increases with increasing Ti doping while the transition temperature between M2 and M1 decreases.