Magnetic oxides of molybdenum(V) and tungsten(V) with the ordered perovskite structure

Article abstract of DOI:10.1021/ic50005a050

Compounds with the type formula A₂B′B″O₆ have been prepared in which A is an alkaline earth ion and B″ is pentavalent molybdenum or tungsten. When B′ is Fe(III), or Cr(III), ferrimagnetic compounds are obtained. The compounds are of the perovskite type and, in the case of the iron compounds, are shown by X-ray diffraction data to be ordered. Very weak superlattice lines were observed in the pattern of Sr₂CrWO₆ but none was found in that of Sr₂CrMoO₆. Partial ordering for these compounds is suggested on the basis of their magnetic properties. Ba₃Cr₂MoO₉ and Ba₃Cr₂WO₉ have the hexagonal barium titanate structure and are not ferrimagnetic.