PEREIRA, Paula Bauer; SERGUEEV, Ilya; GORSSE, Stéphane; DADDA, Jayaram; MÜLLER, Eckhard; HERMANN, Raphaël P.

doi:10.1002/pssb.201248412

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PEREIRA, Paula Bauer
Jülich Centre for Neutron Science [JCNS - PGI, JARA-FIT]
Faculté des Sciences

SERGUEEV, Ilya
Jülich Centre for Neutron Science [JCNS - PGI, JARA-FIT]
European Synchrotron Radiation Facility [ESRF]

GORSSE, Stéphane
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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physica status solidi (b). 2013, vol. 250, n° 7, p. 1300-1307

Wiley

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The lattice dynamics in the IV-VI compounds GeTe, SnTe and PbTe were studied by 125Te and 119Sn nuclear inelastic scattering and the obtained partial density of phonon states were compared with published theoretical calculations. The phase purity and structure were characterized by high energy X-ray diffraction. The effect of the atomic arrangement, rhombohedral for GeTe and cubic for SnTe and PbTe, is visible in the density of phonon states. Vibrational properties are found to be in good agreement with available calculated data and the softer character of the NaCl-type structures in comparison with the rhombohedral GeTe is confirmed.< Leer menos

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Chalcogenides

Phonons

Structure

Sound velocity

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Lattice dynamics and structure of GeTe, SnTe and PbTe

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