Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/28849
Title: Polarizability investigation by first order phase transition in the self-consistent phonon approximation for PSN system
Authors: Uniyal, Manish
Bhatt, S C
Keywords: Phase transition;Model Hamiltonian;Ferroelectrics
Issue Date: Jun-2014
Publisher: NISCAIR-CSIR, India
Abstract: Considering a quadratic Anharmonic model Hamiltonian and using double time temperature dependent Green's function method and Dyson's equation treatment, expression for polarizablity in the frequency response for mixed perovskite type ferroelectrics has been obtained. Using the experimentally observed temperature dependent dielectric constant, loss tangent, soft mode frequency and width for Na1-x KxNbO3 (where x = 0, 0.4 and 0.5), the polarizablity has been calculated for these samples at 10 and 100 kHz.
Page(s): 391-394
URI: http://hdl.handle.net/123456789/28849
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.52(06) [June 2014]

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