https://doi.org/10.1140/epjp/s13360-025-06142-1
Regular Article
Theoretical investigation of transverse limiting frequency, electrical permittivity, and loss factor of KH2PO4(KDP) crystal using a modified pseudospin model
Physics Department, Hemvati Nandan Bahuguna G. University, Srinagar Garhwal, UK, India
a
riyaupadhyay10071996@gmail.com
Received:
17
July
2023
Accepted:
14
February
2025
Published online:
17
March
2025
Potassium dihydrogen phosphate, KH2PO4 (KDP) crystal is an order–disorder type ferroelectric crystal. Earlier model Hamiltonian used by Ganguli et al. is modified by adding other terms to investigate transverse limiting frequency, permittivity, and loss factor in potassium dihydrogen phosphate (KDP) crystal. Green function formalism is used for derivation of formulae. Calculated results agree with experimental data reported by Kaminow and Harding for potassium dihydrogen phosphate KH2PO4 crystal. New terms play important role in explaining quantitatively the transverse limiting frequency, electrical permittivity, and loss factor in potassium dihydrogen phosphate (KDP) crystal.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
