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EnglishLow-temperature specific heat and thermal conductivity measurements have been performed on (Cs2O)0.14(B2O 3)0.86 glass in the temperature range from 1.5 K to 30 K. The caesium ions, weakly bonded to the B-O framework, are able of low-frequency local oscillations and affect the vibrational dynamics in the region of the boson peak. A resonant scattering mechanism between heat carrying acoustic phonons and caesium local modes does not appear to influence the plateau in the thermal conductivity.
| Titolo: | Low-temperature thermal properties of (Cs2O)0.14(B2O3)0.86 glass | |
| Autori: | ||
| Data di pubblicazione: | 2007 | |
| Rivista: | ||
| Abstract: | Low-temperature specific heat and thermal conductivity measurements have been performed on (Cs2O)0.14(B2O 3)0.86 glass in the temperature range from 1.5 K to 30 K. The caesium ions, weakly bonded to the B-O framework, are able of low-frequency local oscillations and affect the vibrational dynamics in the region of the boson peak. A resonant scattering mechanism between heat carrying acoustic phonons and caesium local modes does not appear to influence the plateau in the thermal conductivity. | |
| Handle: | http://hdl.handle.net/11570/11025 | |
| Appare nelle tipologie: | 14.a.1 Articolo su rivista |
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http://hdl.handle.net/11570/11025
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