Transition metal molybdatesmixed valencyhigh-temperature phasesTransition metal molybdates of the formula A MoO 4 where A =Fe, Co or Ni exhibit a first-order phase transition between 670K–970K. An investigation of the lowtemperature ( lt ) and high-temperature ( ht ) phases by x-ray ...
The high-temperature modification of the title mixed compound, cobalt iron molybdate, a transition metal molybdate of type beta-AMoO(4), with A = (Co0.7Fe0.3), is metastable at room temperature. The distribution of Fe and Co is different for the two non-equivalent A sites: only 18 (9)...