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<strong>Temperature dependence of ferroelectric mode frequency, dielectric constant and loss tangent in PbHAsO4 crystal</strong>

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Title Statement <strong>Temperature dependence of ferroelectric mode frequency, dielectric constant and loss tangent in PbHAsO4 crystal</strong>
 
Added Entry - Uncontrolled Name rawat, arvind kumar; Department of Physics H.N.B.Garhwal University Srinagar (Garhwal)-246174 Uttarakhand
Rawat, Aanchal ; Department of Physics H.N.B.Garhwal University Srinagar (Garhwal)-246174 Uttarakhand
Upadhyay, Trilok Chandra; Department of Physics H.N.B.Garhwal University Srinagar (Garhwal)-246174 Uttarakhand
ugc new delhi, India
 
Uncontrolled Index Term Ph.D. Condense Matter Physics
Ferroelectric; Dielectric constant; Anharmonic interaction; Loss tangent; Green’s function
 
Summary, etc. The ferroelectric transition of PbHAsO<sub>4</sub> crystal has been studied using two sublattice pseudospin-lattice coupled mode model with addition of third-order and fourth-order phonon anharmonic interactions terms. With the help of double-time thermal Green’s function method, expressions for ferroelectric mode frequency, dielectric constant and dielectric loss tangent have been derived. By fitting model values of physical quantities, temperature dependence of ferroelectric mode frequency, dielectric constant and loss tangent have been numerically calculated for PbHAsO<sub>4</sub> crystal. Theoretical results have been compared with correlated experimental results of Arend <em>et al.</em><sup>19</sup>. The results obtained in present study are in good agreement with experimental results.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2016-11-28 14:56:48
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/12493
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 54, ##issue.no## 11 (2016): Indian Journal of Pure & Applied Physics
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJPAP/article/download/12493/35928
 
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