Preparation and properties of iron molybdates. II - Magnetochemistry of crystalline phases obtained from precursor precipitates with different compositions

Abstract The crystalline phases prepared by calcination at 350°C of amorphous iron molybdate precipitates with different chemical composition have been studied by magnetic susceptibility and EPR measurements. The magnetic susceptibility parameters and peak-to-peak resonance linewidth are defined for the stoichiometric Fe 2 (MoO 4 ) 3 .At MotoFe ratios in the precursors higher than 1.5 the crystal products contain lattice defects changing the values of the intensive magnetic parameters.