High-Pressure Synthesis of Molybdates with the Wolframite Structure

A series of small cation molybdates, MgMoO 4 , MnMoO 4 , FeMoO 4 , CoMoO 4 , NiMoO 4 , and ZnMoO 4 with the wolframite structure characteristic of the corresponding tungstates have been synthesized at high pressure and temperature. The high-pressure compounds revert to the ambient pressure modifications if heated in air at 600°C.