Alpha-Beta transition in quartz is studied using the Raman scattering. The Raman frequencies
of some lattice modes are analyzed at various temperatures close to the alpha beta transition
in quartz. For this analysis, the experimental data from the literature is used and the soft mode
behavior of those Raman phonons is investigated . On the basis of the predictions of some
models, the temperature dependencies for the Raman frequencies of the lattice modes which
move towards zero (soft mode) and their bandwidths close to the transition temperature Tc are
explained for the alpha-beta transition in quartz. In addition, by using the experimental volume
data from literature, calculation of the temperature dependence of the Raman frequencies
through the Grü / neisen parameter have been studied near the phase transition.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12613650/index.pdf |
| Date | 01 September 2011 |
| Creators | Lider, Mustafa Cem |
| Contributors | Yurtseven, Hamit |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for METU campus |
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