A temperature-dependent structural investigation of electrical transitions in A 3 conb 2 o 9 perovskites ( A = Ca 2+ , Sr 2+ , Ba 2+ )

Abstract

Upon heating, the 1:2 triple perovskites A3CoNb2O9 (A=Ca, Sr or Ba) each undergo well-defined insulator to conductor phase transitions at ∼8, ∼126 and ∼325 °C, respectively. As the trend in the transition temperatures for these materials does not c Show more