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Title: Optical properties of Y and Ti co-substituted BiFeO{sub 3} multiferroics

Pure and co substituted Bi{sub 1−x}Y{sub x}Fe{sub 1−x}Ti{sub x}O{sub 3} (x ≤ 0.24) ceramics were synthesized by solid state reaction method. X-ray diffraction patterns of Y and Ti codoped samples have shown single phase formation. Increasing Y and Ti concentration reveals structural transition from rhombohedral phase (R3c) for x ≤ 0.16 to orthorhombic phase (Pnma) for x = 0.24. FT-IR spectra exhibit broad absorption bands, which may be due to the overlapping of Fe-O and Bi-O vibrations. UV-visible spectroscopy results show strong absorption of light in the spectral range of 400-720 nm, indicating optical band gap in the visible region for these samples. These interesting optical properties of co-substituted BFO samples in visible region may find potential applications in optoelectronic devices.
Authors:
; ; ;  [1]
  1. Department of Physics and Materials Science and Engineering, Jaypee Institute of Information Technology, Noida (U.P.)-201307 (India)
Publication Date:
OSTI Identifier:
22269526
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; BISMUTH COMPOUNDS; CONCENTRATION RATIO; FERRITES; INFRARED SPECTRA; OPTICAL PROPERTIES; ORTHORHOMBIC LATTICES; PHASE TRANSFORMATIONS; TITANIUM COMPOUNDS; TRIGONAL LATTICES; VISIBLE RADIATION; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS