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This manuscript presents a systematic study of conductivity and dielectric relaxations in the solid solution of (BiFeO 3 ) 1-x  -(YMnO 3 ) x  for compositional range (0.0 ≤ x ≤ 0.2) as function of frequency, temperature, and magnetic field. The samples have been synthesized by combustion method. The thermal activations of dc-conductivity and relaxation time obey Arrhenius behavior for, x = 0.0, 0.025, 0.05 but follow variable range hopping of small polarons above, x ≥ 0.075 with activation energy 0.45 eV. The compositional time-temperature superposition of dielectric modulus data suggests that conduction mechanism changes with composition. The bulk capacitance decreases with increase in magnetic field.

Electric conductivity and dielectric relaxation properties of BiFeO 3 -YMnO 3 solid solution