Dielectric Relaxation In Complex Perovskite Sm(Ni{sub 1/2}Ti{sub 1/2})O{sub 3}

Journal Article · Tue Nov 22 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3644432· OSTI ID:21608493

Kumar, Nishant; Prasad, S ^[1]; Sinha, T P ^[2]

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1. Deptt. Of Physics, T.M.B.U., Bhagalpur, Bihar (India)
2. Deptt. Of Physics, Bose Institute, 93/1, A. P. C. Road, Kolkata 700009 (India)

The complex perovskite oxide Samarium nickel titenate, Sm(Ni{sub 1/2}Ti{sub 1/2})O{sub 3}(SNT) is synthesized by a solid-state reaction technique. The X-ray diffraction of the sample at room temperature shows a monoclinic phase. The scanning micrograph of the sample shows the average grain size{approx_equal}0.6{mu}m The field dependence of dielectric response and the loss tangent of the sample are measured in a frequency range from 100Hz to 1MHz and in a temperature range from 313 K to 673 K. An analysis of the real and imaginary parts of the dielectric permittivity with frequency is performed, assuming a distribution of relaxation times as confirmed by Cole-Cole plots. The frequency dependent electrical data are analyzed in the framework of conductivity formalism. The frequency dependent conductivity data are fitted to the universal power law. All these formalisms provided for qualitative similarities in the relaxation times.

• OSTI ID: 21608493
• Journal Information: AIP Conference Proceedings, Vol. 1372, Issue 1; Conference: NSFD-14: 14. national seminar on ferroelectrics and dielectrics, Bilaspur, Chhattisgarh (India), 2-4 Dec 2010; Other Information: DOI: 10.1063/1.3644432; (c) 2011 American Institute of Physics; 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
CERAMICS
DIELECTRIC MATERIALS
ELECTRIC CONDUCTIVITY
FREQUENCY DEPENDENCE
GRAIN SIZE
INDIUM COMPLEXES
MONOCLINIC LATTICES
NICKEL COMPOUNDS
OXIDES
PERMITTIVITY
PEROVSKITE
RELAXATION
RELAXATION LOSSES
SAMARIUM COMPOUNDS
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION
CHALCOGENIDES
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIELECTRIC PROPERTIES
DIFFRACTION
ELECTRICAL PROPERTIES
ENERGY LOSSES
LOSSES
MATERIALS
MICROSTRUCTURE
MINERALS
OXIDE MINERALS
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
SIZE
TRANSITION ELEMENT COMPOUNDS