Physical properties of V$_{1-x}$Ti$_{x}$O$_{2}$ (0 $<$ x $<$ 0.187)   single crystals
  Free standing, low strain, single crystals of pure and titanium doped VO$_{2}$ were grown out of an excess of V$_{2}$O$_{5}$ using high temperature solution growth techniques. At $T_{MI} \sim$ 340 K, pure VO$_{2}$ 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. 
Tai Kong, Morgan W. Masters, Sergey L. Bud'ko and Paul C. Canfield
cond-mat.mtrl-sci