Journal ArticleDOI
On the transverse electrical susceptibilities of KDP type crystals
TLDR
Using statistical Green's function technique exact expression for the transverse electrical susceptibility (x a ) for KDP type crsytals has been derived with the total pseudo-spin lattice coupled mode Hamiltonian as discussed by the authors.About:
This article is published in Solid State Communications.The article was published on 1980-02-01. It has received 3 citations till now.read more
Citations
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Theory of Ferroelectric Phase Transition in KHzP04 Type Crystals. I
TL;DR: In this article, a theory of the phase transi- tion is developed under the assumption that the ferroelectric behavior of this substance is due to cooperation of the ionic displacements, the interactions between ions and protons and the tunneling motion of protons.
Journal ArticleDOI
Temperature dependence of the lattice modes polarised in a direction perpendicular to the c axis of potassium dihydrogen phosphate
TL;DR: In this paper, the infrared reflectivity spectra polarised in a direction perpendicular to the c axis of potassium dihydrogen phosphate were studied for both the ferro- and paraelectric phase, over a wide temperature range: 10 to 420K.
Journal ArticleDOI
Far-infrared reflectivity spectra of KH2PO4 between 300 and 400 K
F. Brehat,B. Wynckk,A. Hadni +2 more
TL;DR: The far-infrared reflectivity spectra of a KDP single crystal in the temperature range 300 to 400 K are explained in terms of six lattice modes predicted by group theory and two extra modes as discussed by the authors.
References
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Book
Principles and Applications of Ferroelectrics and Related Materials
TL;DR: In this paper, the theory of ferroelectricity in terms of soft modes and lattice dynamics is developed and modern techniques of measurement, including X-ray, optic, and neutron scattering, infra-red absorption, and magnetic resonance.
Journal ArticleDOI
Collective motions of hydrogen bonds
TL;DR: In this article, the low frequency collective modes of protons are calculated for ferrroelectric crystals of the KH 2 PO 4 type taking into account the tunneling frequency and a simplified interaction between proton sites.
Journal ArticleDOI
Dynamical Theory of the Phase Transition in KH2PO4-Type Ferroelectric Crystals
TL;DR: In this paper, the ferroelectric phase transition in [K-PO 4 ]-type crystals is explained by the coupling between the proton tunneling mode and the optical mode vibration of the complexes along the c-axis.
Journal ArticleDOI
Dynamics of order-disorder-type ferroelectrics and anti-ferroelectrics
TL;DR: In this paper, a pseudo-spin wave theory for order-disorder-type ferroelectrics and anti-ferro-electrics is proposed. But the pseudo-Ising model is not suitable for the case of the non-ising model.
Related Papers (5)
Electron spin-lattice relaxation of AsO44- and SeO43- centers in KH2PO4 type crystals: Crystal field versus hyperfine effects
B. Rakvin,N.S. Dalal,N.S. Dalal +2 more