Heat capacity measurements were performed on Tl0.8Co4Sb11Sn. An Einstein vibrating behavior for the thallium atoms was found. The inelastic neutron scattering measurements on T0.8Co4Sb11Sn, Tl0.5Co3.5Fe0.5Sb12, and Tl0.8Co3FeSb12 showed a localized vibrational mode, which confirmed this Einstein vibrational behavior. Furthermore, the 56±2 K temperature of the Einstein vibrational mode obtained from the heat capacity measurements showed excellent agreement with the 5 meV energy or 57±2 K values obtained from the neutron scattering measurements.
R. P. Hermann et al., "Einstein Oscillators in Thallium Filled Antimony Skutterudites," Physical Review Letters, vol. 90, no. 13, pp. 135505/1-135505/4, American Physical Society (APS), Apr 2003.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevLett.90.135505
Keywords and Phrases
Antimony; Cobalt Compounds; Electronic Density Of States; Molecular Vibrations; Neutron Scattering; Oscillations; Specific Heat Of Solids; Temperature; Einstein Oscillators; Inelastic Neutron Scattering; Skutterudites; Thallium Compounds
International Standard Serial Number (ISSN)
Article - Journal
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