Breakdown of phonon glass paradigm in La- and Ce-filled Fe4Sb12 skutterudites.


The material class of skutterudites is believed to have strong potential for thermoelectric application due to the very low thermal conductivity of the filled structures. It is generally assumed that the atoms filling the skutterudite cages act as 'rattlers' and essentially induce a disordered lattice dynamics referred to as 'phonon glass'. Here, we present… (More)
DOI: 10.1038/nmat2260


6 Figures and Tables