Abstract
Zr substituted Bi0.9Dy0.1Fe1−xZrxO3 (x=0.03, 0.06 and 0.10) multiferroic ceramics were synthesized by rapid liquid phase sintering technique to improve its multiferroic properties. Rietveld structural refinement of XRD patterns and Raman spectra revealed a partial structural phase transition from rhombohedral (R3c) to biphasic structure (R3c+P4mm) on codoping. The substitution of larger ionic radii and higher valence Zr4+ ions at Fe-site leads to decrease in the grain size as a result of charge compensation at Fe site. The weak ferromagnetic behavior were observed in all samples along with maximum Mr value of 0.159emu/g for x=0.03 concentration, which is also endorsed by second order Raman modes. The distortion in FeO6 octahedra due to Zr substitution leads to splitting of electronic bands of 3.2eV into multiplets, which in turn reduced the optical band gap value in the range of 2.06–2.10eV for all samples.
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