Strutural, Dielectric and Magnetoelectric Properties of Fe+3 doped BaTiO3
Abstract
BaTi1-xRxO3(whereR=Fe;x=0.0,0.4,0.6) have been synthesized by solid-state reaction technique. The powders have decarbonated at1200 ºC and sintered at 1250 ºC for 2 hours. The study reveals that the coexistence of tetragonal and hexagonal phases is strongly influenced by Fe doping concentration. The increase in crystallite size, lattice strain, c/a ratio and grain size has been found with Fe doping.The dielectric constants of Fe-doped BaTiO3 multiferroic ceramics exhibited a decrease with Fe concentration.The decrease of dielectric losswith increasing frequency is attributed to the fact that thefrequency of charge carriers cannot follow the changes to the externally applied electric field beyond a certain frequency limit.Overall, iron (Fe) doping has remarkably influenced the structural, morphological, electrical and dielectric properties of barium titanate (BaTiO3)ceramics.Magneto dielectric behavior may be due to the coupling between ferroelectric and magnetic domains.Magneto dielectric coefficient increases with Fe doping concentrationthusshowing multiferroic nature.
