Upadhyay, T C and Joshi, Makarand (2012) Dielectric properties of quasi-one dimensional PbHPO4 crystal in presence of external electric field. Journal of Metallurgy and Materials Science, 54(3) . pp. 209-218.
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The third and fourth order phonon anharmonic interactions external electric field terms are added in the two-sublattice pseudospin model for PbHPO4 crystal. By using double time thermal Green's function method modified model, theoretical expressions for soft mode frequency, dielectric constant, shift, width and tangent loss are evaluated for PbHPO4 crystal. Temperature and field variations of soft mode frequency, dielectric constant and loss tangent are calculated numerically. Present theoretical results agree with experimental result of Smutney and Fousek for dielectric constant of PbHPO4.
|Uncontrolled Keywords:||Dielectric constant, Ferroelectric, Green's Function, Anharmonic interactions.up|
|Deposited By:||Dr. A K Sahu|
|Deposited On:||12 Feb 2013 15:46|
|Last Modified:||12 Feb 2013 15:46|
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