Quantitative evaluation of the effects of positional versus orientational disorder on the scattering of acoustic phonons in disordered matter
The phonon scattering processes in the three solid phases of ethanol are investigated using thermal conductivity,
 light, and neutron-scattering measurements as well as molecular dynamics simulations on single-
 crystalline models for two crystalline modifications (fully ordered mono...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2007 |
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| Sprache: | Englisch |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Quantitative evaluation of the effects of positional versus
 orientational disorder on the scattering of acoustic
 phonons in disordered matter / F.J. Bermejo, R. Fernández-Perea, C. Cabrillo, A.I. Krivchikov, A.N. Yushchenko, V.G. Manzhelii, O.A. Korolyuk, M.A. González, M. Jimenez-Ruiz // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 790-797. — Бібліогр.: 13 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862708405684142080 |
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| author | Bermejo, F.J. Fernández-Perea, R. Cabrillo, C. Krivchikov, A.I. Yushchenko, A.N. Manzhelii, V.G. Korolyuk, O.A. González, M.A. Jimenez-Ruiz, M. |
| author_facet | Bermejo, F.J. Fernández-Perea, R. Cabrillo, C. Krivchikov, A.I. Yushchenko, A.N. Manzhelii, V.G. Korolyuk, O.A. González, M.A. Jimenez-Ruiz, M. |
| citation_txt | Quantitative evaluation of the effects of positional versus
 orientational disorder on the scattering of acoustic
 phonons in disordered matter / F.J. Bermejo, R. Fernández-Perea, C. Cabrillo, A.I. Krivchikov, A.N. Yushchenko, V.G. Manzhelii, O.A. Korolyuk, M.A. González, M. Jimenez-Ruiz // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 790-797. — Бібліогр.: 13 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The phonon scattering processes in the three solid phases of ethanol are investigated using thermal conductivity,
light, and neutron-scattering measurements as well as molecular dynamics simulations on single-
crystalline models for two crystalline modifications (fully ordered monoclinic and orientationally disordered
bcc phases). The orientationally disordered crystal is found to exhibit a temperature dependence of the
thermal conductivity that is remarkably close to that of a structurally disordered solid, especially at low temperatures.
This results, together with measurements of Brillouin linewidths as derived from light scattering
measurements, emphasize the role of orientational disorder in phonon scattering. The experimental results
obtained on polycrystal samples are then discussed with the aid of computer simulations on single-crystalline
models of both bcc and monoclinic crystals. Our findings are in good agreement with the wealth of thermodynamic
and dynamic data available so far, but at variance with the inferences drawn from inelastic x-ray
data on polycrystalline samples, where a common nature for the excitations in all phases is postulated.
|
| first_indexed | 2025-12-07T17:10:39Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-121796 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T17:10:39Z |
| publishDate | 2007 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Bermejo, F.J. Fernández-Perea, R. Cabrillo, C. Krivchikov, A.I. Yushchenko, A.N. Manzhelii, V.G. Korolyuk, O.A. González, M.A. Jimenez-Ruiz, M. 2017-06-16T08:11:05Z 2017-06-16T08:11:05Z 2007 Quantitative evaluation of the effects of positional versus
 orientational disorder on the scattering of acoustic
 phonons in disordered matter / F.J. Bermejo, R. Fernández-Perea, C. Cabrillo, A.I. Krivchikov, A.N. Yushchenko, V.G. Manzhelii, O.A. Korolyuk, M.A. González, M. Jimenez-Ruiz // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 790-797. — Бібліогр.: 13 назв. — англ. 0132-6414 PACS: 66.70.+f; 65.60.+a; 61.43.–j; 63.50.+x; 63.20.Ls https://nasplib.isofts.kiev.ua/handle/123456789/121796 The phonon scattering processes in the three solid phases of ethanol are investigated using thermal conductivity,
 light, and neutron-scattering measurements as well as molecular dynamics simulations on single-
 crystalline models for two crystalline modifications (fully ordered monoclinic and orientationally disordered
 bcc phases). The orientationally disordered crystal is found to exhibit a temperature dependence of the
 thermal conductivity that is remarkably close to that of a structurally disordered solid, especially at low temperatures.
 This results, together with measurements of Brillouin linewidths as derived from light scattering
 measurements, emphasize the role of orientational disorder in phonon scattering. The experimental results
 obtained on polycrystal samples are then discussed with the aid of computer simulations on single-crystalline
 models of both bcc and monoclinic crystals. Our findings are in good agreement with the wealth of thermodynamic
 and dynamic data available so far, but at variance with the inferences drawn from inelastic x-ray
 data on polycrystalline samples, where a common nature for the excitations in all phases is postulated. The authors are indebted to the Fundamental Research
 Foundation of Ukraine (Project F-16/1-2006) for a partial
 support of this study.
 The study was partially supported with a Grant of
 President of Ukraine for young scientists engaged in scientific
 research (GP/F13/0037). en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Related Topics Quantitative evaluation of the effects of positional versus orientational disorder on the scattering of acoustic phonons in disordered matter Article published earlier |
| spellingShingle | Quantitative evaluation of the effects of positional versus orientational disorder on the scattering of acoustic phonons in disordered matter Bermejo, F.J. Fernández-Perea, R. Cabrillo, C. Krivchikov, A.I. Yushchenko, A.N. Manzhelii, V.G. Korolyuk, O.A. González, M.A. Jimenez-Ruiz, M. Related Topics |
| title | Quantitative evaluation of the effects of positional versus orientational disorder on the scattering of acoustic phonons in disordered matter |
| title_full | Quantitative evaluation of the effects of positional versus orientational disorder on the scattering of acoustic phonons in disordered matter |
| title_fullStr | Quantitative evaluation of the effects of positional versus orientational disorder on the scattering of acoustic phonons in disordered matter |
| title_full_unstemmed | Quantitative evaluation of the effects of positional versus orientational disorder on the scattering of acoustic phonons in disordered matter |
| title_short | Quantitative evaluation of the effects of positional versus orientational disorder on the scattering of acoustic phonons in disordered matter |
| title_sort | quantitative evaluation of the effects of positional versus orientational disorder on the scattering of acoustic phonons in disordered matter |
| topic | Related Topics |
| topic_facet | Related Topics |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/121796 |
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