Relaxational dynamics of quasi-one-dimensional CsD2PO4-type ferroelectrics

Levitsky, R. R.; Zachek, I. R.; Mits, E. V.; Grigas, J.; Paprotny, W.

doi:10.1080/00150198608245013

Cited by 20 publications

(17 citation statements)

References 29 publications

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“…In section 4 a chain of coupled equations for time-dependent DFs is derived and a decoupling scheme is proposed, which supports the results of the cluster approximation. If the kinetic parameters are independent of frequency, the NSO method yields the results that coincide with those [28,32] obtained within the Glauber master equation approach.…”

Section: Introductionsupporting

confidence: 74%

“…Elementary cells of such compounds contain two PO 4 tetrahedrons with two short H-bonds related to one of them (tetrahedron of type A). H-bonds related to the other (B-type) tetrahedron belong to two nearest structural elements surrounding it [28]. The Hamiltonian of the proton subsystem of the considered ferroelectrics has the form [28]:…”

Section: Dynamics and Thermodynamics Of Deuterated Quasi-1d Ferroelecmentioning

confidence: 99%

“…Several decoupling schemes are suggested. One of them yields thermodynamic and dynamic quantities of the model similar to those obtained within a cluster approach developed in papers [28,29]. These theoretical results were extensively used for the discussion and analysis of experimental data on ferroelectric of CsH 2 PO 4 type [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

“…The protons of the longer H-bonds are ordered in both phases. Deuteration significantly changes the temperature of the phase transition, the dielectric and thermal properties of CsH 2 PO 4 crystal [16][17][18][19][20][21][22][23][24][25][26][27][28][29]. It is the evidence of the important role of H-bonds in the ferroelectricity of these crystals.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the authors of papers [22][23][24][25], comparing predictions of the model with such parameters with other measured quantities, found a marked disagreement and concluded that the model cannot describe the compounds under investigation. However, papers [28,29,32] show that the theory [28,32] which allows for short-and long-range interactions, describes thermodynamics and dynamics of these compounds with a satisfactory accuracy.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

To the Theory of Relaxation Phenomena in Quasi-One-Dimensional Ferroelectrics With Hydrogen Bonds. Nonequilibrium Statistical Operator Approach

Levitskii¹,

Zachek²,

Sokolovskii³

1998

Condens. Matter Phys.

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Kinetic equations for the dielectric properties of CsH 2 PO 4 -type ferroelectrics are derived within the nonequilibrium statistical operator method proposed by D.N.Zubarev. These equations are solved with two different approaches. In the first approach the closure relation in the spirit of a two-site cluster approximation is used. In the second approach the exact relation between the static correlation functions is extrapolated to a dynamic case and used as a closure relation. The both approaches give similar results. The obtained dynamic characteristics are close to those of the Glauber model and are shown to describe the dynamic dielectric permittivity of CsH 2 PO 4 and CsD 2 PO 4 crystals.

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Section: Introductionsupporting

confidence: 74%

Section: Dynamics and Thermodynamics Of Deuterated Quasi-1d Ferroelecmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

To the Theory of Relaxation Phenomena in Quasi-One-Dimensional Ferroelectrics With Hydrogen Bonds. Nonequilibrium Statistical Operator Approach

Levitskii¹,

Zachek²,

Sokolovskii³

1998

Condens. Matter Phys.

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Microwave and ultrasonic investigations of superionic phase transitions in CsDSO4 and CsDSeO4

Mizeris

Grigas

Samulionis

et al. 1988

Phys. Stat. Sol. (a)

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Results are given of the investigation of the temperature and frequency dependence of the complex dielectric permittivity and electrical conductivity of the CsDSO, and CsDSeO, single crystals in the frequency range 15 MHz to 52 GHz as well as velocity and attenuation of the longitudinal ultrasonic waves in the vicinity of a superionic phase transition temperature.Es werden die Ergebnisse der Untersuchung der Temperaturabhangigkeit und der Frequenz-abhSngigkeit der komplexen Dielektrizitatskonstante und der elektrischen Leitflhigkeit im Frequenzbereich von 15 MHz bis 52 GHz sowie auch der Temperaturabhlngigkeit der Gsschwindigkeit und der Absorption der longitudinalen Ultraschallwellen, in der Umgebung des superionischen Phasenubergangs von CsDS0,-und CsDSe0,-Einkristallen dargestellt.

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Microwave dielectric investigations of TlH2PO4

Mizeris

Grigas

Choudhary

et al. 1989

Phys. Stat. Sol. (a)

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The dielectric properties are investigated of TlH2PO4 crystals over the frequency region 1 MHz to 78 GHz. Dielectric permittivity is almost independent on frequency up to the millimeter range. In the millimeter range a low‐frequency lattice mode causes dielectric dispersion. The mode (νs = 367 GHz at T = 360 K) contribution defines the high static dielectric permittivity ϵ′b of TDP, its softening causes the anomalies of ϵ;′b and ϵ″b at the upper ferroelastic phase transition temperature Tc2 = 357 K and the temperature dependence of the permittivity in the ferroelastic phase.

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Relaxational dynamics of quasi-one-dimensional CsD2PO4-type ferroelectrics

Cited by 20 publications

References 29 publications

To the Theory of Relaxation Phenomena in Quasi-One-Dimensional Ferroelectrics With Hydrogen Bonds. Nonequilibrium Statistical Operator Approach

To the Theory of Relaxation Phenomena in Quasi-One-Dimensional Ferroelectrics With Hydrogen Bonds. Nonequilibrium Statistical Operator Approach

Microwave and ultrasonic investigations of superionic phase transitions in CsDSO4 and CsDSeO4

Microwave dielectric investigations of TlH2PO4

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