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Low-temperature specific heat, thermal conductivity, and ultrasonic velocity of glassy carbons

โœ Scribed by J. A. Katerberg; A. C. Anderson


Publisher
Springer US
Year
1978
Tongue
English
Weight
361 KB
Volume
30
Category
Article
ISSN
0022-2291

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โœฆ Synopsis


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 similar to those of amorphous materials, yet it appears that these features arise from origins other than the localized excitations responsible for the low-temperature behavior of amorphous materials.


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