Enhanced Ferromagnetic Properties In Nd and Gd Codoped BiFeO_3 Ceramics

摘要

Structural, optical and magnetic properties of Nd~(3+) and Gd~(3+) doped BiFe03 were studied. X-ray diffraction studies confirmed that all the co-doped Bii-_x-yNd_xGd_yFe03 samples are polycrystalline in nature crystallizing in rhombohedral type structure (Space group: R3c). In addition to this presence of residual phases like Bi_2Fe_4O_9, Bi_(25)FeO_(40) were also observed. Raman spectra confirms the structural distortion in co-doped ceramics. Band gap of samples decrease from 2.08eV to 1.95eV with increase in Gd concentration. Room temperature magnetization measurement indicated enhancement of magnetic properties with increase in Gd concentration.