Showing papers on "Bipolaron published in 1979"

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

Abstract: The electrical resistivity, magnetic susceptibility and EPR of (Ti1-xVx)4O7 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 Eb is estimated from these data and it is shown that vanadium induces pairs with a smaller Eb in its vicinity.