Pure BiFeO3(BFO) and 15% Ho-doped Bi0.85Ho0.15FeO3(BHFO) ceramics were prepared by solid state reaction followed immediately by quenching process
and the structure
dielectric
ferroelectric
leakage conduction and magnetic properties were studied.The results show that Ho substitution can reduce the miscellaneous phase in the BiFeO3 ceramics
and the ferroelectric
dielectric
leakage current and magnetic properties are improved.Compared with the BFO
BHFO ceramics exhibit a typical ferroelectric hysteresis loop with a 2Pr of 15 μC/cm2 at an applied electric field of 150 kV/cm.The dielectric measurements show that the dielectric constant and dielectric losses of BHFO ceramics are significant larger and smaller
respectively
than those of the BFO.Moreover
a weak ferromagnetism was observed in the BHFO ceramics by magnetic measurements.