Temperature Dependence of Relaxation Rate in KH2PO4 above Tc

N. Panwar

Temperature Dependence of Relaxation Rate in KH2PO4 above Tc

V. S. Bist §

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N. S. Panwar

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§ HNB Garhwal University Srinagar (Garhwal) Uttrakhand...

Temperature Dependence of Relaxation Rate in KH2PO4 above Tc

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Abstract

With the help of the modified four-particle cluster model Hamiltonian [GJSFR, 10, 18(2010)], the theoretical expressions for the relaxation rate of polarization fluctuation have been evaluated and discussed for the KH2PO4 (KDP)- type crystals by using the double-time thermal dependent retarded Green’s functions techniques and Dyson’s equation treatment. The correlations appearing in the dynamic equation have been evaluated using double-time thermal dependent retarded Green’s functions techniques and Dyson’s equation treatment. Without any decoupling the higher order correlations have been evaluated using the renormalized Hamiltonian. By fitting model values in the theoretical expressions, temperature dependence of relaxation rate is calculated for the KH2PO4 (KDP)-type crystals. Theoretical results are compared with experimental result of Garland and Novotny [1969 Phys Rev. 177 971]. A good agreement has been found.

References

14 Cites in Article

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

V. S. Bist, N. S. Panwar. 2026. "Temperature Dependence of Relaxation Rate in KH2PO4 above Tc". Global Journal of Science Frontier Research - A: Physics & Space Science GJSFR-A Volume 13 (GJSFR Volume 13 Issue 2 (A1)).

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GJSFR Volume 13 Issue 2 (A1)

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords

Dyson Equation Treatment Lattice Anharmonicity Relaxation Rate Retarded Green’s Functions Stochastic Motion

Classification

GJSFR-A Classification FOR Code: 029999

Submission ReceivedNovember 2, 2012
Peer Review Double Blind
Handling Editor
Accepted November 24, 2012
Published January 21, 2013

Version of record

v1.2

Issue date

January 21, 2013

Language

English

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Article Matrices

Total Score: 107

Country: India

Subject: Global Journal of Science Frontier Research - A: Physics & Space Science

Authors: Dr. V. S. Bist, N. S. Panwar (PhD/Dr. count: 1)

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