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|Title:||By using PLCM model variation of ferroelectric properties of ammonium iron alum along with temperature|
Upadhyay, Trilok Chandra
|Keywords:||Dielectric constant;PLCM model;Phase transition;Tangent loss|
|Abstract:||Applying double-time thermal Green′s function technique24 and modifying pseudospin-lattice coupled mode (PLCM) model by adding third-and fourth-order phonon anharmonic interactions and extra spin-lattice interaction term dielectric properties of AFeSD alum have been studied. Expressions for shift, width, normal mode frequency, dielectric constant and loss tangent have been derived for AFeSD alum. Numerical calculations have been done. Theoretical results have been compared with experimental results of Pepinsky et al25. Agreement has been found.|
|Appears in Collections:||AIR Vol.02(1) [March 2020]|
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