Metal-insulator transitions and phase diagram of (Ti1-xVx)4O7: electrical, calorimetric, magnetic and EPR studies

作者：C. Schlenker, Sohail Ahmed, R. Buder, M. Gourmala · 发表于：Journal of Physics C Solid State Physics · 年份：1979 · DOI：10.1088/0022-3719/12/17/021 · 被引用次数：49 · 研究领域：Transition Metal Oxide Nanomaterials、Advanced Condensed Matter Physics、Luminescence Properties of Advanced Materials

The electrical resistivity, magnetic susceptibility and EPR of (Ti 1-x V x ) 4 O 7 single crystals (0 0.35 at.%, only the disordered pairs and metallic phases are found. The complete phase diagram has been obtained by electrical resistivity studies and corroborated by all other data. The electrical properties of the disordered phase are attributed to bipolaron mobility; the bipolaron binding energy E b is estimated from these data and it is shown that vanadium induces pairs with a smaller E b in its vicinity.