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The polycrystalline Bi1-xHoxFeO3 (x=0, 0.05, 0.1) compounds were synthesizedby conventional solid-state route. Rietveld refinement reveals that all thecompounds were stabilized in rhombohedral structure with R3c (IUCr No. 161)space group. A competing ferro and anti-ferro magnetic interaction was observedin Ho-substituted compounds. A change in the Fe-O-Fe bond-angle and Fe-O bonddistance increase the Neel Transition temperature with increasing Hoconcentration. The appearance of peak in imaginary part of impedance (Z") foreach concentration and shifting of this peak with temperature towards higherfrequency side indicated that the presence of electric relaxations. CorrelatedBarrier Hopping model (CBH) was employed to explain the frequency andtemperature dependence of ac conductivity and the mechanism of transport in thematerial BFO and Ho substituted BFO. Density of states near Fermi level wascalculated by using the ac conductivity data.

Study of Structural, Magnetic and Electrical properties on Ho - substituted BiFeO3