Lattice Vibrational Properties of Crystalline Si-Ge Alloys
| Autor: | Takeo Ishidate, Kazuhiko Tsuji, Motoichi Shibuya, Kuon Inoue, Shigeru Minomura, Shingo Katagiri |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Materials science
Extended X-ray absorption fine structure Condensed matter physics media_common.quotation_subject General Physics and Astronomy Lattice vibration Asymmetry Effective nuclear charge Bond length Condensed Matter::Materials Science symbols.namesake Lattice (order) symbols Raman spectroscopy media_common |
| Zdroj: | Journal of the Physical Society of Japan. 53:2584-2591 |
| ISSN: | 1347-4073 0031-9015 |
| DOI: | 10.1143/jpsj.53.2584 |
| Popis: | The alloying and pressure dependences of Raman spectra due to optic modes of lattice vibration in crystalline Si-Ge alloys have been measured. The effect of alloying on the mode frequencies is interpreted by introducing the heteropolar term due to the effective charge into the interatomic interaction as well as taking account of the bond lengths expected from the EXAFS measurements. The asymmetry of the observed Raman spectral-line shape is discussed on the basis of the structural disorder with deviations of the bond lengths. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|