External field effect on the anisotropy of dielectric permeability of KH₂PO₄ and NaKC₄H4O₆· 4H₂O crystals under high pressure
Experimental studies of the effect of temperature, external pressure and electric eld on the anisotropy of dielectric permeability of KH₂PO₄ and NaKC₄H4O₆· 4H₂O crystals are performed. The experimental data on the effect of electric field and pressure on the dielectric permeability of Rochelle sa...
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| Date: | 2008 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики конденсованих систем НАН України
2008
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| Series: | Condensed Matter Physics |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/119383 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | External field effect on the anisotropy of dielectric permeability of KH₂PO₄ and NaKC₄H4O₆· 4H₂O crystals under high pressure / A.G. Slivka, V.M. Kedyulich, H.M. Guyvan // Condensed Matter Physics. — 2008. — Т. 11, № 3(55). — С. 571-581. — Бібліогр.: 17 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | Experimental studies of the effect of temperature, external pressure and electric eld on the anisotropy of
dielectric permeability of KH₂PO₄ and NaKC₄H4O₆· 4H₂O 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. |
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