Record Details


Field	Value

Title	Electric field dependence of specific heat in BaxSr₁₋xTiO₃ ferroelectric perovskites

Creator	Kukreti, Ashish Kumar, Ashok Naithani, U C

Subject	Barium strontium titanate Defects Soft mode frequency Specific heat Constant volume Anharmonicity Perovskites Green’s function

Description	43-48 The electric field dependence of the specific heat of an anharmonic BaxSr₁₋xTiO₃ ferroelectric crystal has been calculated in its paraelectric phase from the Silverman-Joseph Hamiltonian augmented with fourth order phonon co-ordinates using double time Green’s functions. The electric field dependent soft mode contribution to the specific heat is described by appropriate Einstein terms. The variation of specific heat with temperature defect and electric field has been discussed. The specific heat decreases with increasing external electric field and increases with increasing temperature, in agreement with previous results. In the vicinity of Curie temperature, the Cochran soft mode is held responsible for the anomalous behaviour of specific heat.

Date	2009-02-18T05:06:57Z 2009-02-18T05:06:57Z 2009-01

Type	Article

Identifier	0019-5596 http://hdl.handle.net/123456789/3139

Language	en_US

Publisher	CSIR

Source	IJPAP Vol.47(1) [January 2009]

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