Magnetic origin of dielectric transition in BiFeO{sub 3}

Journal Article · Thu Apr 24 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4873046· OSTI ID:22269374

Ray, J.; Biswal, A. K.; Babu, P. D.; Siruguri, V. ^[1]

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1. UGC-DAE Consortium for Scientific Research, Mumbai center,BARC, Mumbai- 400085 (India)

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.

• OSTI ID: 22269374
• Journal Information: AIP Conference Proceedings, Vol. 1591, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

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