External field effect on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals under high pressure

External field effect on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals under high pressure

Experimental studies of the effect of temperature, external pressure and electric field on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O...

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Bibliographic Details
Main Authors: A.G.Slivka, V.M.Kedyulich, H.M.Guyvan
Format: Article
Language:English
Published: Institute for Condensed Matter Physics 2008-09-01
Series:Condensed Matter Physics
Subjects:
ferroelectrics
phase transition
dielectric permeability
pressure
electric field
Online Access:http://dx.doi.org/10.5488/CMP.11.3.571
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spelling doaj-8df0d296de8e4a2183da118d914106812020-11-25T01:41:41ZengInstitute for Condensed Matter PhysicsCondensed Matter Physics1607-324X2008-09-01113571External field effect on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals under high pressureA.G.SlivkaV.M.KedyulichH.M.GuyvanExperimental studies of the effect of temperature, external pressure and electric field on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals are performed. The experimental data on the effect of electric field and pressure on the dielectric permeability of Rochelle salt are analyzed in the framework of phenomenological theory with the account of the vicinity of the phase transitions to the double critical point. Coefficients of thermodynamic potential expansion over the order parameter are determined as well as its pressure behaviour is described. The hydrostatic pressure increase is shown to shift the phase transitions in Rochelle salt away from the double critical point.http://dx.doi.org/10.5488/CMP.11.3.571ferroelectricsphase transitiondielectric permeabilitypressureelectric field
collection DOAJ
language English
format Article
sources DOAJ
author A.G.Slivka
V.M.Kedyulich
H.M.Guyvan
spellingShingle A.G.Slivka
V.M.Kedyulich
H.M.Guyvan
External field effect on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals under high pressure
Condensed Matter Physics
ferroelectrics
phase transition
dielectric permeability
pressure
electric field
author_facet A.G.Slivka
V.M.Kedyulich
H.M.Guyvan
author_sort A.G.Slivka
title External field effect on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals under high pressure
title_short External field effect on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals under high pressure
title_full External field effect on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals under high pressure
title_fullStr External field effect on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals under high pressure
title_full_unstemmed External field effect on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals under high pressure
title_sort external field effect on the anisotropy of dielectric permeability of kh<sub>2</sub>po<sub>4</sub> and nakc<sub>4</sub>h<sub>4</sub>o<sub>6</sub>· 4h<sub>2</sub>o crystals under high pressure
publisher Institute for Condensed Matter Physics
series Condensed Matter Physics
issn 1607-324X
publishDate 2008-09-01
description Experimental studies of the effect of temperature, external pressure and electric field on the anisotropy of dielectric permeability of KH<sub>2</sub>PO<sub>4</sub> and NaKC<sub>4</sub>H<sub>4</sub>O<sub>6</sub>· 4H<sub>2</sub>O crystals are performed. The experimental data on the effect of electric field and pressure on the dielectric permeability of Rochelle salt are analyzed in the framework of phenomenological theory with the account of the vicinity of the phase transitions to the double critical point. Coefficients of thermodynamic potential expansion over the order parameter are determined as well as its pressure behaviour is described. The hydrostatic pressure increase is shown to shift the phase transitions in Rochelle salt away from the double critical point.
topic ferroelectrics
phase transition
dielectric permeability
pressure
electric field
url http://dx.doi.org/10.5488/CMP.11.3.571
work_keys_str_mv AT agslivka externalfieldeffectontheanisotropyofdielectricpermeabilityofkhsub2subposub4subandnakcsub4subhsub4subosub6sub4hsub2subocrystalsunderhighpressure
AT vmkedyulich externalfieldeffectontheanisotropyofdielectricpermeabilityofkhsub2subposub4subandnakcsub4subhsub4subosub6sub4hsub2subocrystalsunderhighpressure
AT hmguyvan externalfieldeffectontheanisotropyofdielectricpermeabilityofkhsub2subposub4subandnakcsub4subhsub4subosub6sub4hsub2subocrystalsunderhighpressure
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