| Presentation | 2008-10-31 Relation between Debye temperature measured by ultrasonic method and heat capacity of oxide glasses Seiji Inaba, Shigeru Fujino, Yasuya Nakayama, Toshihisa Kajiwara, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Some binary and ternary silicate, aluminosilicate, borate, phosphate, tellurite, gerumanate and heavy metal oxide glasses were prepared in melting method. Debye temperature was calculated form mean velocity measured by ultrasonic method. Heat capacity was measured in the temperature range from 300 to 840K by A.C. calorimetry. We proposed an empirical equation for estimating the mean velocity in terms of ionic packing ratio and dissociation energy of oxide glass. The relationship between heat capacity and chemical composition was discussed by use of the Debye model. We found that heat capacities of all the samples studied here scaled with the molar heat capacity at the Debye temperature have a similar magnitude and temperature dependence, from 300K to the glass transition points. Based on the observation obtained in this work, we proposed an empirical equation which is composed of Debye temperature calculated form chemical composition. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Oxide glass / composition / ultrasonic method / velocity / Debye temperature / A.C. calorimetry / heat capacity |
| Paper # | US2008-58 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2008/10/23(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Relation between Debye temperature measured by ultrasonic method and heat capacity of oxide glasses |
| Sub Title (in English) | |
| Keyword(1) | Oxide glass |
| Keyword(2) | composition |
| Keyword(3) | ultrasonic method |
| Keyword(4) | velocity |
| Keyword(5) | Debye temperature |
| Keyword(6) | A.C. calorimetry |
| Keyword(7) | heat capacity |
| 1st Author's Name | Seiji Inaba |
| 1st Author's Affiliation | Faculty of Engineering, Kyushu University() |
| 2nd Author's Name | Shigeru Fujino |
| 2nd Author's Affiliation | Faculty of Engineering, Kyushu University |
| 3rd Author's Name | Yasuya Nakayama |
| 3rd Author's Affiliation | Faculty of Engineering, Kyushu University |
| 4th Author's Name | Toshihisa Kajiwara |
| 4th Author's Affiliation | Faculty of Engineering, Kyushu University |
| Date | 2008-10-31 |
| Paper # | US2008-58 |
| Volume (vol) | vol.108 |
| Number (no) | 266 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |