Abstract
Abstract The evolution of crystalline and magnetic structures of Ba 2 FeMoO 6 in a wide temperature range (20–473 K) has been investigated by time-of-flight neutron diffraction method. Analysis of the bond lengths showed that the phase transition of Ba 2 FeMoO 6 compound from cubic (Fm-3 m) to tetragonal (I4/mmm) structure is accompanied by distortions (∼1%) of oxygen octahedrons BO 6 . The magnetoresistance of Ba 2 FeMoO 6 has been measured in a wide range of temperatures and magnetic fields. The field dependence of magnetoresistance is demonstrative for systems with weighty contribution of the intergrain conduction.
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