Phonon-glass electron-crystal thermoelectric clathrates: Experiments and theory
Hiroshima University · Max Planck Society · +3 more institutions
Abstract
Type-I clathrate compounds have attracted a great deal of interest in connection with the search for efficient thermoelectric materials. These compounds constitute networked cages consisting of nanoscale tetrakaidecahedrons (14-hedrons) and dodecahedrons (12-hedrons), in which the group-1 or -2 elements in the periodic table are encaged as so-called ``rattling'' guest atoms. It is remarkable that, although these compounds have a crystalline cubic structure, they exhibit glasslike phonon thermal conductivity over the whole temperature range depending on the states of rattling guest atoms in the tetrakaidecahedron. In addition, these compounds show unusual glasslike specific heats and terahertz-frequency phonon…
Citation impact
- FWCI
- 18.30
- Percentile
- 100%
- References
- 289
Authors
4Topics & keywords
- Clathrate hydrate
- Thermoelectric effect
- Phonon
- Thermoelectric materials
- Thermal conductivity
- Physics
- Condensed matter physics
- Amorphous solid