Lattice dynamics and structure of GeTe, SnTe and PbTe

Paula Bauer Pereira; Ilya Sergueev; Stéphane Gorsse; Jayaram Dadda; Eckhard Müller; Raphaël P. Hermann

doi:10.1002/pssb.201248412

Lattice dynamics and structure of GeTe, SnTe and PbTe

Paula Bauer Pereira, Ilya Sergueev, Stéphane Gorsse, Jayaram Dadda, Eckhard Müller, Raphaël P. Hermann

Research output: Contribution to journal › Article › peer-review

167 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	1300-1307
Number of pages	8
Journal	Physica Status Solidi (B) Basic Research
Volume	250
Issue number	7
DOIs	https://doi.org/10.1002/pssb.201248412
State	Published - Jul 2013
Externally published	Yes

Keywords

Chalcogenides
Phonons
Sound velocity
Structure

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10.1002/pssb.201248412

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abstract = "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.",

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AU - Bauer Pereira, Paula

AU - Sergueev, Ilya

AU - Gorsse, Stéphane

AU - Dadda, Jayaram

AU - Müller, Eckhard

AU - Hermann, Raphaël P.

PY - 2013/7

Y1 - 2013/7

N2 - 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.

AB - 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.

KW - Chalcogenides

KW - Phonons

KW - Sound velocity

KW - Structure

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JO - Physica Status Solidi (B) Basic Research

JF - Physica Status Solidi (B) Basic Research

IS - 7

ER -

Lattice dynamics and structure of GeTe, SnTe and PbTe

Abstract

Keywords

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