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Title: Effect of Co doping on structural, optical, magnetic and dielectric properties of Bi{sub 2}Fe{sub 4}O{sub 9}

Polycrystalline Bi{sub 2}Fe{sub 4}O{sub 9} and 2% Co doped Bi{sub 2}Fe{sub 4}O{sub 9} were prepared by solid state reaction route. X-ray diffraction (XRD) result reveals that there is no change in the crystal structure due to Co doping and the compound has orthorhombic structure. UV-visible spectroscopy confirms the decrease in band gap due Co doping. Zero field cooled magnetization measurement at 100 Oe magnetic field shows substantial decrease in the magnetic transition temperature. Room temperature frequency dependent dielectric permittivity at 1V DC bias shows ∼10% increase in Co doped sample with respect to pure Bi{sub 2}Fe{sub 4}O{sub 9}.
Authors:
; ;  [1] ;  [2]
  1. Department of Physics and Astronomy, National Institute of Technology, Rourkela-769008 (India)
  2. UGC-DAE Consortium for Scientific Research Mumbai Centre, R-5 Shed, BARC, Mumbai-400085 (India)
Publication Date:
OSTI Identifier:
22490612
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 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; DIELECTRIC MATERIALS; DOPED MATERIALS; FERRITES; FREQUENCY DEPENDENCE; MAGNETIC FIELDS; MAGNETIZATION; ORTHORHOMBIC LATTICES; PERMITTIVITY; POLYCRYSTALS; SOLIDS; TEMPERATURE RANGE 0273-0400 K; TRANSITION TEMPERATURE; ULTRAVIOLET RADIATION; VISIBLE SPECTRA; X-RAY DIFFRACTION