DYNAMICAL NANOSRUCTURING OF NaCl PREMELTING PHASES
Complex investigation of NaCl premelting phases dynamical structuring have been carry out in different kinetic conditions. The transient states near the melting point are fl uctuating, nonequilibrium processes, which are accompanied by dissipative states formation. Thermodynamic parameters of premel...
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| Format: | Article |
| Language: | English |
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Voronezh State University
2018-12-01
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| Series: | Конденсированные среды и межфазные границы |
| Subjects: |
| _version_ | 1818155256078401536 |
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| author | Ekaterina S. Mashkina Konstantin A. Barkov |
| author_facet | Ekaterina S. Mashkina Konstantin A. Barkov |
| author_sort | Ekaterina S. Mashkina |
| collection | DOAJ |
| description | Complex investigation of NaCl premelting phases dynamical structuring have been carry out in different kinetic conditions. The transient states near the melting point are fl uctuating, nonequilibrium processes, which are accompanied by dissipative states formation. Thermodynamic parameters of premelting
transient states (Т’pre-m – temperature of the premelting beginning, T’’pre-m – temperature of the premelting end, δTpre-m – temperature interval of premelting, ΔQpre-m – dissipation heat of premelting) are determined in different heating rates. Each heating rate has defi nite value of thermodynamic parameters.
Frequency spectrum of dissipation heat at different kinetic conditions is a nonlinear Brownian noise or 1/f 2-noise, which is indirectly indicated of dynamical reconstruction in premelting excited state.
The nanocluster parameters in NaCl premelting phases have been calculated by experimental thermodynamic data. Average cluster size in NaCl premelting phase is 10–15 nm. X-ray analysis of NaCl
in premelting state is indicated of nonmonotonic peak intensity. Such diffraction peaks behavior connected with heat fl uctuations in premelting. Size of coherent scattering region is in agreement
with calculated parameters of nanoclaster premelting phases.
Thus, amplifi cation of fl uctuations has been occurred near critical point (Т’pre-m) in consequence of anharmonism of lattice vibrations. Increase of fl uctuations reduced to dynamic formation of nanocluster structures (generation of dissipative structures or ordering through fl uctuations). |
| first_indexed | 2024-12-11T14:39:30Z |
| format | Article |
| id | doaj.art-70eb314489af422a93d0e7fe65d1d8b6 |
| institution | Directory Open Access Journal |
| issn | 1606-867X 1606-867X |
| language | English |
| last_indexed | 2024-12-11T14:39:30Z |
| publishDate | 2018-12-01 |
| publisher | Voronezh State University |
| record_format | Article |
| series | Конденсированные среды и межфазные границы |
| spelling | doaj.art-70eb314489af422a93d0e7fe65d1d8b62022-12-22T01:02:00ZengVoronezh State UniversityКонденсированные среды и межфазные границы1606-867X1606-867X2018-12-0120461161710.17308/kcmf.2018.20/636DYNAMICAL NANOSRUCTURING OF NaCl PREMELTING PHASESEkaterina S. Mashkina0Konstantin A. Barkov1Cand. Sci. (Phys.-Math.), Assistant Professor of the Semiconductor Physic Department, Voronezh State University, Voronezh, RussiaPostgraduate Student, Solid State Physic and Nanostructures Department, Voronezh state University, Voronezh, RussiaComplex investigation of NaCl premelting phases dynamical structuring have been carry out in different kinetic conditions. The transient states near the melting point are fl uctuating, nonequilibrium processes, which are accompanied by dissipative states formation. Thermodynamic parameters of premelting transient states (Т’pre-m – temperature of the premelting beginning, T’’pre-m – temperature of the premelting end, δTpre-m – temperature interval of premelting, ΔQpre-m – dissipation heat of premelting) are determined in different heating rates. Each heating rate has defi nite value of thermodynamic parameters. Frequency spectrum of dissipation heat at different kinetic conditions is a nonlinear Brownian noise or 1/f 2-noise, which is indirectly indicated of dynamical reconstruction in premelting excited state. The nanocluster parameters in NaCl premelting phases have been calculated by experimental thermodynamic data. Average cluster size in NaCl premelting phase is 10–15 nm. X-ray analysis of NaCl in premelting state is indicated of nonmonotonic peak intensity. Such diffraction peaks behavior connected with heat fl uctuations in premelting. Size of coherent scattering region is in agreement with calculated parameters of nanoclaster premelting phases. Thus, amplifi cation of fl uctuations has been occurred near critical point (Т’pre-m) in consequence of anharmonism of lattice vibrations. Increase of fl uctuations reduced to dynamic formation of nanocluster structures (generation of dissipative structures or ordering through fl uctuations).sodium chloridepremeltingmelting pointfl uctuationnanoclusterdissipation statescoherent scattering region. |
| spellingShingle | Ekaterina S. Mashkina Konstantin A. Barkov DYNAMICAL NANOSRUCTURING OF NaCl PREMELTING PHASES Конденсированные среды и межфазные границы sodium chloride premelting melting point fl uctuation nanocluster dissipation states coherent scattering region. |
| title | DYNAMICAL NANOSRUCTURING OF NaCl PREMELTING PHASES |
| title_full | DYNAMICAL NANOSRUCTURING OF NaCl PREMELTING PHASES |
| title_fullStr | DYNAMICAL NANOSRUCTURING OF NaCl PREMELTING PHASES |
| title_full_unstemmed | DYNAMICAL NANOSRUCTURING OF NaCl PREMELTING PHASES |
| title_short | DYNAMICAL NANOSRUCTURING OF NaCl PREMELTING PHASES |
| title_sort | dynamical nanosructuring of nacl premelting phases |
| topic | sodium chloride premelting melting point fl uctuation nanocluster dissipation states coherent scattering region. |
| work_keys_str_mv | AT ekaterinasmashkina dynamicalnanosructuringofnaclpremeltingphases AT konstantinabarkov dynamicalnanosructuringofnaclpremeltingphases |