Temperature Dependence of Polarizability in Sodium Potassium Tantalate Mixed Ceramic System

Authors

  • Manish Uniyal  Department of physics, H.N.B.Garhwal University, Srinagar, Garhwal, Uttarakhand, India
  • H. K. Semwal  Department of physics, H.N.B.Garhwal University, Srinagar, Garhwal, Uttarakhand, India
  • S. C. Bhatt  Department of physics, H.N.B.Garhwal University, Srinagar, Garhwal, Uttarakhand, India

Keywords:

Polarizability, ferroelectrics, Model Hamiltonian

Abstract

Using a quadratic anharmonic model Hamiltonian and using double time temperature dependent Green's function method and Dyson's equation treatment, expression for polarizability in the frequency response for mixed perovskite type ferroelectrics have been obtained. Using the experimentally observed temperature dependent dielectic constant, loss tangent, soft mode frequency, width for Na1-xKxTaO3 (x=0,0.2,0.4,0.5 and 0.6) the polarizability has been calculated for these samples at 10kHz

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International Journal of Scientific Research in Science and Technology

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Published

2015-12-05

Issue

Volume 1, Issue 5, November-December-2015

Section

Research Articles

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How to Cite

[1]
Manish Uniyal, H. K. Semwal, S. C. Bhatt "Temperature Dependence of Polarizability in Sodium Potassium Tantalate Mixed Ceramic System" International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011,Volume 1, Issue 5, pp.238-241, November-December-2015.