Theoretical Predictions for High-Pressure Elastic, Mechanical, and Phonon Properties of SiGe Alloy



Título del documento: Theoretical Predictions for High-Pressure Elastic, Mechanical, and Phonon Properties of SiGe Alloy
Revista: Brazilian journal of physics
Base de datos: PERIÓDICA
Número de sistema: 000392501
ISSN: 0103-9733
Autores: 1
1
Instituciones: 1Hitit University, Department of Physics, Corum. Turquía
Año:
Periodo: Abr
Volumen: 46
Número: 2
Paginación: 192-197
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, analítico
Resumen en inglés Elastic, mechanical, and phonon properties of zinc blende (ZB)-type SiGe ordered alloy were theoretically investigated in detail under pressures up to 12 GPa. Unlike earlier theoretical calculations of literature, a Stillinger-Weber-type interatomic potential was applied to this work for the first time with geometry optimization calculations. Pressure dependence of typical cubic elastic constants, bulk, shear and Young moduli, elastic wave velocities, Kleinman parameter, elastic anisotropy factor, phonon dispersion, as well as density of states of SiGe alloy were calculated and compared with other results when available. In general, our results for the above considered quantities of SiGe alloy are satisfactory and compare well the former theoretical data of alloy
Disciplinas: Física y astronomía
Palabras clave: Física de materia condensada,
Aleaciones silico-germanio,
Semiconductores,
Fonones,
Constantes elásticas,
Propiedades mecánicas
Keyword: Physics and astronomy,
Condensed matter physics,
Silicon-germanium alloys,
Semiconductors,
Phonons,
Elastic constants,
Mechanical properties
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