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2008 | 114 | 4 | 791-806
Article title

Phase Transitions in [N(CH_3)_4]_2ZnCl_4 and [N(CH_3)_4]_2CuCl_4 Crystals Related with the Incommensurate Modulation Existence

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Abstracts
EN
The continuous phase transitions are observed in the crystals with incommensurate phase. They are transitions of parent-incommensurate phases (T_i); transitions between metastable states; incommensurate-commensurate phases (T_c). It was set that phase transition between parent and incommensurate phase is a continuous second-order phase transition with a critical index β = 0.5. The transition between metastable states is a continuous phase transition through the intermediate temperature region - incommensurate phase. The wave vector changes with the temperature here and wave vectorwe q* = q₁ - q₂ appears, where q₁, q₂ denote commensurate values of incommensurability wave vector of neighboring metastable states. It was shown that the phase transition between incommensurate and commensurate phases is a continuous phase transition.
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Year
Volume
114
Issue
4
Pages
791-806
Physical description
Dates
published
2008-10
received
2007-11-14
(unknown)
2008-04-27
(unknown)
2008-05-08
Contributors
author
  • Department of Nonlinear Optics, Lviv National Ivan Franko University, Tarnavskogo str. 107, Lviv, UA-79017, Ukraine
author
  • Department of Nonlinear Optics, Lviv National Ivan Franko University, Tarnavskogo str. 107, Lviv, UA-79017, Ukraine
  • Department of Nonlinear Optics, Lviv National Ivan Franko University, Tarnavskogo str. 107, Lviv, UA-79017, Ukraine
author
  • Department of Nonlinear Optics, Lviv National Ivan Franko University, Tarnavskogo str. 107, Lviv, UA-79017, Ukraine
author
  • Department of Nonlinear Optics, Lviv National Ivan Franko University, Tarnavskogo str. 107, Lviv, UA-79017, Ukraine
  • Department of Ecology, Ukrainian National University of Forestry, O. Kobylyanskoyi str. 1, Lviv, UA-79005, Ukraine
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv114n415kz
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