Specific-heat Study of Low-energy Vibrational State m Vitreous Samarium Phosphates
Measurements of specific heat in the temperature range 1.5K to 30K were made for two samples of vitreous samarium phosphates. A large contribution to the specific heat, well above what is expected from acoustic phonons (in the Debye approximation), is discussed in terms of the theoretical predict...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Universiti Putra Malaysia Press
1995
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| Online Access: | http://psasir.upm.edu.my/id/eprint/3855/ http://psasir.upm.edu.my/id/eprint/3855/1/Specific-heat_Study_of_Low-energy_Vibrational_State_m.pdf |
| _version_ | 1848839648656228352 |
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| author | Hassan, Senin Abd. Aziz, Sidek G. A., Saunders G., Carini |
| author_facet | Hassan, Senin Abd. Aziz, Sidek G. A., Saunders G., Carini |
| author_sort | Hassan, Senin |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Measurements of specific heat in the temperature range 1.5K to 30K were
made for two samples of vitreous samarium phosphates. A large contribution
to the specific heat, well above what is expected from acoustic phonons (in the
Debye approximation), is discussed in terms of the theoretical predictions of a
phonon-fracton cross-over approach. The phonon-fracton density of states used
to fit the excess specific heat gives rise to model parameters with the same
magnitudes as those found previously for a wide range of glasses. |
| first_indexed | 2025-11-15T07:14:48Z |
| format | Article |
| id | upm-3855 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:14:48Z |
| publishDate | 1995 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-38552013-05-27T07:11:47Z http://psasir.upm.edu.my/id/eprint/3855/ Specific-heat Study of Low-energy Vibrational State m Vitreous Samarium Phosphates Hassan, Senin Abd. Aziz, Sidek G. A., Saunders G., Carini Measurements of specific heat in the temperature range 1.5K to 30K were made for two samples of vitreous samarium phosphates. A large contribution to the specific heat, well above what is expected from acoustic phonons (in the Debye approximation), is discussed in terms of the theoretical predictions of a phonon-fracton cross-over approach. The phonon-fracton density of states used to fit the excess specific heat gives rise to model parameters with the same magnitudes as those found previously for a wide range of glasses. Universiti Putra Malaysia Press 1995 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3855/1/Specific-heat_Study_of_Low-energy_Vibrational_State_m.pdf Hassan, Senin and Abd. Aziz, Sidek and G. A., Saunders and G., Carini (1995) Specific-heat Study of Low-energy Vibrational State m Vitreous Samarium Phosphates. Pertanika Journal of Science & Technology, 3 (2). pp. 261-269. ISSN 0128-7680 English |
| spellingShingle | Hassan, Senin Abd. Aziz, Sidek G. A., Saunders G., Carini Specific-heat Study of Low-energy Vibrational State m Vitreous Samarium Phosphates |
| title | Specific-heat Study of Low-energy Vibrational State m
Vitreous Samarium Phosphates |
| title_full | Specific-heat Study of Low-energy Vibrational State m
Vitreous Samarium Phosphates |
| title_fullStr | Specific-heat Study of Low-energy Vibrational State m
Vitreous Samarium Phosphates |
| title_full_unstemmed | Specific-heat Study of Low-energy Vibrational State m
Vitreous Samarium Phosphates |
| title_short | Specific-heat Study of Low-energy Vibrational State m
Vitreous Samarium Phosphates |
| title_sort | specific-heat study of low-energy vibrational state m
vitreous samarium phosphates |
| url | http://psasir.upm.edu.my/id/eprint/3855/ http://psasir.upm.edu.my/id/eprint/3855/1/Specific-heat_Study_of_Low-energy_Vibrational_State_m.pdf |