Published December 12, 1978 | Version v1
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Lattice dynamics of Cd rich Te Cd1-x Hgn alloys

Creators

  • 1. Centre d'Etudes Nucleaires de Saclay, Services d'Electronique de Saclay, Laboratoire d'Etudes et de Recherches Avancees (France)

Description

Lattice dynamical study for the low concentration of Hg atoms (x<0,3) in Cd-rich Te Hgx Cd1-x mixed system is reported. The vibrational mode frequency for the isolated Hg replacing Cd atoms in CdTe is observed at 131 cm-1. The impurity is described by a perturbation model that accounts for the change of mass at the impurity site as well as the local variation of nearest neighbour forces. A calculation based on the Green's function theory suggests stiffening in nearest neighbour forces (Δf/f= + 0.25) due to isolated Hg in CdTe system. (authors)

Abstract (French)

On etudie la dynamique de reseau des alliages Te Cd(1-x) Hgx du cote riche en cadmium (x<0.3). La frequence du mode vibrationnel du mercure en substitution isolee sur site Cd est trouvee egale a 131 cm-1. Ce cas est discute en connexion avec la variation locale des forces introduites par la presence du defaut. Un calcul base sur une technique de fonctions de Green revele que l'introduction du mercure isole (x=0) conduit a un net renforcement des forces entre l'impurete et ses premiers voisins (ΔF/F ≅+ 0.25). (auteurs)

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Additional details

Additional titles

Original title (French)
Dynamique de reseau d'alliage Te Cd1-x Hgn riches en cadmium

Publishing Information

Imprint Pagination
15 p.
Report number
CEA-N--2076

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
49083782
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CADMIUM ALLOYS; CRYSTAL GROWTH METHODS; FOURIER TRANSFORM SPECTROMETERS; GREEN FUNCTION; IMPURITIES; INFRARED SPECTRA; KRAMERS-KRONIG CORRELATION; LATTICE VIBRATIONS; MERCURY ALLOYS; PERMITTIVITY; TELLURIUM ALLOYS; TERNARY ALLOY SYSTEMS
Descriptors DEC
ALLOY SYSTEMS; ALLOYS; CORRELATIONS; DIELECTRIC PROPERTIES; ELECTRICAL PROPERTIES; FUNCTIONS; MEASURING INSTRUMENTS; PHYSICAL PROPERTIES; SPECTRA; SPECTROMETERS

Optional Information

Notes
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