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Title: Magnetic origin of dielectric transition in BiFeO{sub 3}

Magnetic relaxation measurements at 5K, 50K and 120K on BiFeO{sub 3} prepared by sol-gel auto combustion method shows stretched -exponential decay. These results shows the two factors viz, cooperative dynamics and rate of dynamics of spin, may be responsible for the low temperature magnetic-glassy behavior, concluded from bifurcation of zero field cooled (ZFC) and field cooled (FC) data of dc magnetization. Temperature dependent dielectric measurement shows a possible phase transition, seen in the dielectric-relaxation time and dielectric constant in the range 200 – 240K. Comparison of dielectric and magnetization data indicates a possibility of magneto-electric coupling.
Authors:
; ;  [1] ; ;  [2]
  1. National Institute of Technology, Rourkela, Odisha-769008 (India)
  2. UGC-DAE Consortium for Scientific Research, Mumbai center,BARC, Mumbai- 400085 (India)
Publication Date:
OSTI Identifier:
22269374
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:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMBUSTION; COUPLING; DIELECTRIC MATERIALS; MAGNETIZATION; PERMITTIVITY; PHASE TRANSFORMATIONS; RELAXATION TIME; SOL-GEL PROCESS; TEMPERATURE DEPENDENCE