期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 349, 期 -, 页码 264-267出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2013.09.002
关键词
Bismuth ferrite; Structural characterization; Magnetic material; Optical property
资金
- Department of Science and Technology (DST), Government of India [SR/S3/ME/0048/2009-SERC]
Bi1-xPrxFe1-xTixO3 ceramics with x=0.00, 010 and 0.20 were synthesized by a solid state reaction method. Rietveld fitting of the diffraction data reveals structural transition from rhombohedral phase (R3c) for x <= 0.10 to orthorhombic phase (Pnma) for x=0.20. Room temperature M-H hysteresis measurements reveal that magnetization increases due to the structural distortion and partial destruction of spin cycloid caused by co-doping in BiFeO3 ceramics. FT-IR spectra exhibit broad absorption bands, which may be due to the overlapping of Fe-O and Bi-O vibrations in FeO6 octahedra of these ceramics. UV-visible spectroscopy results show strong absorption of light in the spectral range of 480-640 nm, indicating optical band gap in the visible region for these samples. (C) 2013 Elsevier B.V. All rights reserved.
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