Effective thermal conductivity and diffusivity of GeSeSb glasses measured simultaneously as a function of temperature and fit to empirical equations
Thermal transport properties like effective thermal conductivity (λe) and effective thermal diffusivity (ke) of Ge–Se–Sb chalcogenide glassy alloys were measured simultaneously using transient plane source (TPS) technique from room temperature to 260 °C at normal pressure. Twin pellets of the sample...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2015-09-01
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| Series: | Journal of Asian Ceramic Societies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2187076415000615 |
| _version_ | 1818651929928007680 |
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| author | Vandana Kumari Anusaiya Kaswan Dinesh Patidar Kananbala Sharma Narendra Sahai Saxena |
| author_facet | Vandana Kumari Anusaiya Kaswan Dinesh Patidar Kananbala Sharma Narendra Sahai Saxena |
| author_sort | Vandana Kumari |
| collection | DOAJ |
| description | Thermal transport properties like effective thermal conductivity (λe) and effective thermal diffusivity (ke) of Ge–Se–Sb chalcogenide glassy alloys were measured simultaneously using transient plane source (TPS) technique from room temperature to 260 °C at normal pressure. Twin pellets of the sample, prepared under a load of 5 ton, were used for these measurements. In the studied temperature range, both λe and ke initially remain almost constant from room temperature to 160 °C and then increase to maxima with further increase of temperature, and thereafter decrease with increasing temperature. This variation has been explained phenomenologically on the basis of variation of phonon mean free path with temperature. An effort has been made to predict this behavior by an empirical relation obtained from polynomial fit of the experimental data. The calculated values of λe and ke are in good agreement with the experimental results over the entire range of temperatures under investigation. |
| first_indexed | 2024-12-17T02:13:56Z |
| format | Article |
| id | doaj.art-f09625bdbb324103b4c4d6bc6e41fe23 |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-12-17T02:13:56Z |
| publishDate | 2015-09-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-f09625bdbb324103b4c4d6bc6e41fe232022-12-21T22:07:28ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642015-09-013333934410.1016/j.jascer.2015.06.006Effective thermal conductivity and diffusivity of GeSeSb glasses measured simultaneously as a function of temperature and fit to empirical equationsVandana KumariAnusaiya KaswanDinesh PatidarKananbala SharmaNarendra Sahai SaxenaThermal transport properties like effective thermal conductivity (λe) and effective thermal diffusivity (ke) of Ge–Se–Sb chalcogenide glassy alloys were measured simultaneously using transient plane source (TPS) technique from room temperature to 260 °C at normal pressure. Twin pellets of the sample, prepared under a load of 5 ton, were used for these measurements. In the studied temperature range, both λe and ke initially remain almost constant from room temperature to 160 °C and then increase to maxima with further increase of temperature, and thereafter decrease with increasing temperature. This variation has been explained phenomenologically on the basis of variation of phonon mean free path with temperature. An effort has been made to predict this behavior by an empirical relation obtained from polynomial fit of the experimental data. The calculated values of λe and ke are in good agreement with the experimental results over the entire range of temperatures under investigation.http://www.sciencedirect.com/science/article/pii/S2187076415000615Transient plane source techniqueAmorphous materialsChalcogenide glassesThermal conductivityTransport properties |
| spellingShingle | Vandana Kumari Anusaiya Kaswan Dinesh Patidar Kananbala Sharma Narendra Sahai Saxena Effective thermal conductivity and diffusivity of GeSeSb glasses measured simultaneously as a function of temperature and fit to empirical equations Journal of Asian Ceramic Societies Transient plane source technique Amorphous materials Chalcogenide glasses Thermal conductivity Transport properties |
| title | Effective thermal conductivity and diffusivity of GeSeSb glasses measured simultaneously as a function of temperature and fit to empirical equations |
| title_full | Effective thermal conductivity and diffusivity of GeSeSb glasses measured simultaneously as a function of temperature and fit to empirical equations |
| title_fullStr | Effective thermal conductivity and diffusivity of GeSeSb glasses measured simultaneously as a function of temperature and fit to empirical equations |
| title_full_unstemmed | Effective thermal conductivity and diffusivity of GeSeSb glasses measured simultaneously as a function of temperature and fit to empirical equations |
| title_short | Effective thermal conductivity and diffusivity of GeSeSb glasses measured simultaneously as a function of temperature and fit to empirical equations |
| title_sort | effective thermal conductivity and diffusivity of gesesb glasses measured simultaneously as a function of temperature and fit to empirical equations |
| topic | Transient plane source technique Amorphous materials Chalcogenide glasses Thermal conductivity Transport properties |
| url | http://www.sciencedirect.com/science/article/pii/S2187076415000615 |
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