Doping induced modification in magnetism and magnetoelectric coupling at room temperature in Fe2T(1-x)NbxO6

Abstract

The polycrystalline Fe2Te(1-x)NbxO6 (0.0, 0.05, 0.10) is synthesized following solid state reaction route. The phase purity and the structural study are done by the Reitveld refinement of the X-ray diffraction data. The improved magnetic property of the materials is confirmed by temperature and magnetic field dependent magnetization measurement. We observe a Griifith phase like transition and increased irreversibility in MH hysteresis loop in case of 10% Nb doping. The presence of room temperature ferrolectricty and magnetoelectricity is confirmed through remanent polarisation measurement under 0T and 1.2T magnetic field. The increasing trend in magnetoeletcric coupling is observed with increasing doping concentration.