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<strong>Temperature dependence of soft mode frequency and loss tangent of ammonium iron alum</strong>

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Title Statement <strong>Temperature dependence of soft mode frequency and loss tangent of ammonium iron alum</strong>
 
Added Entry - Uncontrolled Name Rawat, Arvind Kumar; 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
Rawat, Aanchal ; Physics Department, H N B Garhwal University, Srinagar 246 174, India
ugc new delhi, India
 
Uncontrolled Index Term Consdance matter physics
Pseudospin-lattice coupled mode; Soft mode; Anharmonic interaction; Dielectric constant
 
Summary, etc. The pseudospin-lattice coupled mode model has been modified by adding third-and fourth-orders phonon anharmonic interactions terms, with the help of double-time temperature dependent Green’s function method expressions.The values of ferroelectric mode frequency, dielectric constant and loss tangent have been derived. Model values of physical quantities in above expressions have been fitted. Temperature dependence of above quantities has been calculated numerically. Theoretical results have been compared with experimental results of others. A good agreement has been found.
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2017-10-09 09:45:39
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJPAP/article/view/12027
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 55, ##issue.no## 9 (2017): Indian Journal of Pure & Applied Physics
 
Language Note en
 
Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJPAP/article/download/12027/34285
 
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