Metal-insulator transition in V nO 2 n-1

Research on phase relationships and structure studies by electron diffraction confirm V _nO _{2 n-1} ( n = 3-9) phases between V ₂O ₃ and VO ₂. Metal-insulator phase transitions have been found in all phases but V ₃O ₅ and V ₇O ₁₃. Electrical, magnetic and thermodynamic properties associated with the transitions are reported for sintered samples or for single crystals prepared by a vapor-transport method. The results are collated and reviewed in summarized form.