IndiumV3, Main, Repository, bibRecord, 000238

Vibrational and structural properties of an amorphous InSe9 alloy produced by mechanical alloying

Identifieur interne : 000238 ( Main/Repository ); précédent : 000237; suivant : 000239

Vibrational and structural properties of an amorphous InSe9 alloy produced by mechanical alloying

Auteurs : RBID : Pascal:13-0205313

Descripteurs français

Pascal (Inist)
- Mode vibration, Alliage mécanique, Spectre Raman, EXAFS, Coordinence, Distance interatomique, Structure état amorphe, Dilatation thermique, Cumulant, Fonction distribution paire, Etat amorphe, Séléniure d'indium.

English descriptors

KwdEn :
- Amorphous state, Amorphous state structure, Coordination number, Cumulant, EXAFS, Indium selenides, Interatomic distances, Mechanical alloying, Pair distribution function, Raman spectra, Thermal expansion, Vibrational modes.

Abstract

In this article we investigated structural and vibrational properties of an amorphous alloy of the In-Se system. The amorphous InSe₉ alloy was produced by mechanical alloying and it was studied using Raman spectroscopy and extended X-ray absorption fine structure spectroscopy techniques, and from them several properties, such as vibrational modes, average coordination numbers and interatomic distances, structural and thermal disorders, assymetry of the partial distribution functions g_ij(r), thermal expansions and Einstein temperatures were determined and compared to the values found in other alloys of the In-Se system. This comparison indicated some important differences among our alloy produced by mechanical alloying and alloys produced by other techniques, which is a clear indication of the influence of the fabrication technique in their physical properties. The main differences occur in the vibrational spectrum, with the presence of new vibrational modes, and in the structure, since Se-Se pairs are found in a higher quantity than in other In-Se alloys.

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 alloy produced by mechanical alloying</title>
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<author><name sortKey="Jastrombek, Diana" uniqKey="Jastrombek D">Diana Jastrombek</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Departamento de Física, Centro Politécnico, Universidade Federal do Paraná</s1>
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<author><name sortKey="Duarte, Celso A" uniqKey="Duarte C">Celso A. Duarte</name>
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<author><name sortKey="De Souza, Sergio M" uniqKey="De Souza S">Sergio M. De Souza</name>
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<author><name sortKey="Stolf, Sandro F" uniqKey="Stolf S">Sandro F. Stolf</name>
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<front><div type="abstract" xml:lang="en">In this article we investigated structural and vibrational properties of an amorphous alloy of the In-Se system. The amorphous InSe<sub>9</sub>
 alloy was produced by mechanical alloying and it was studied using Raman spectroscopy and extended X-ray absorption fine structure spectroscopy techniques, and from them several properties, such as vibrational modes, average coordination numbers and interatomic distances, structural and thermal disorders, assymetry of the partial distribution functions g<sub>ij</sub>
(r), thermal expansions and Einstein temperatures were determined and compared to the values found in other alloys of the In-Se system. This comparison indicated some important differences among our alloy produced by mechanical alloying and alloys produced by other techniques, which is a clear indication of the influence of the fabrication technique in their physical properties. The main differences occur in the vibrational spectrum, with the presence of new vibrational modes, and in the structure, since Se-Se pairs are found in a higher quantity than in other In-Se alloys.</div>
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Vibrational and structural properties of an amorphous InSe9 alloy produced by mechanical alloying

Vibrational and structural properties of an amorphous InSe9 alloy produced by mechanical alloying

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri