Abstract
Polycrystalline samples of Ho doped BiFeO 3 were prepared by solid state reaction method and effect of partial substitution of Ho on dielectric, magnetic and ferroelectric properties was studied. High temperature dielectric results show two dielectric anomalies both in ɛ and tan δ, out of which, anomaly at higher temperature (∼400 °C) could be ascribed to antiferromagnetic Néel temperature which, is a signature of magnetoelectric coupling. The magnetic moment is greatly improved and the maximum magnetization was found to be 0.736 emu/g. Saturated ferroelectric hysteresis loops were observed for Bi 0.95Ho 0.05FeO 3 with remnant polarization ( P r ) = 1.59 μC/cm 2, maximum polarization ( P max ) = 2.56 μC/cm 2 and coercivity ( E c ) = 5.45 kV/cm. We have conducted comprehensive magnetoelectric and magnetodielectric properties at room temperature. Magnetic field induced ferroelectric hysteresis loop observed in Bi 0.95Ho 0.05FeO 3 is of prime importance.
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