The specific heat Cp of base catalyzed silica aerogels of different densities has been measured at very low temperatures. The results are discussed using information on the elastic properties obtained from Brillouin light scattering experiments carried out on the same materials.
โฆ LIBER โฆ
Low-temperature specific heat and thermal conductivity of silica aerogels
โ Scribed by A. Bernasconi; T. Sleator; D. Posselt; J.K. Kjems; H.R. Ott
- Book ID
- 117147316
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 374 KB
- Volume
- 145
- Category
- Article
- ISSN
- 0022-3093
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We have measured the specific heat (0.1 <T< I K) and thermal conductivity (O.O7<T<300 K) of two glassy carbons, one pyrolysed at lOOO"C, the other at 2500ยฐC. The temperature dependence of ultrasonic velocity (0.2-300K) was also measured on the 2500ยฐC material. The above properties are remarkably sim