Lattice dynamics in FeSi measured by inelastic x-ray scattering

Результат исследований: Научные публикации в периодических изданияхстатья


The phonon dispersion of FeSi was measured by inelastic x-ray scattering. The study of its temperature evolution in the range of 100 K-300 K showed that the phonon modes soften to a different extent. The phonons exhibiting specifically strong softening were revealed to belong to the weakly dispersive optical branch. At the same time, the calculations of the lattice dynamics of FeSi suggest that this branch corresponds mainly to the atomic displacements that change the Fe-Fe nearest neighbor distance. It points to the role of the Fe-Fe interaction in the phonon softening.

Язык оригиналаанглийский
Номер статьи265402
Число страниц7
ЖурналJournal of Physics Condensed Matter
Номер выпуска26
СостояниеОпубликовано - 3 июл 2019

Предметные области Scopus

  • Физика конденсатов
  • Материаловедение (все)

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