Temperature Variation of the Frequency of Longitudinal Inter-Planar Oscillations in Pyrolitic Graphite
- 15 January 1971
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physics
- Vol. 49 (2) , 277-279
- https://doi.org/10.1139/p71-030
Abstract
The zone-boundary longitudinal phonon frequency, propagating along the hexad axis in pyrolitic graphite, has been measured by neutron spectrometry over a temperature range of 200 to 900 °K. The relative frequency change for this temperature interval, Δν/ν, is 0.07, a very high value in view of the lower limit for the melting temperature for graphite of 3800 °K.Keywords
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