Pressure and temperature effects on the Γ and N-phonons in zirconium
| Autor: | E. I. Salamatov, S. Ostanin, V. Yu. Trubitsin |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Zirconium
General Computer Science Condensed matter physics Phonon Chemistry General Physics and Astronomy chemistry.chemical_element General Chemistry Brillouin zone Condensed Matter::Materials Science Computational Mathematics Transverse plane Temperature and pressure Mechanics of Materials Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons General Materials Science Phase diagram |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 0927-0256 |
| Popis: | The effective potentials for the E2g-phonon at the Γ point of the Brillouin zone of hcp Zr and the transverse N phonon of bcc Zr are calculated for different pressures by the frozen-phonon method. The temperature and pressure dependences of the phonon frequencies are studied within the framework of a modified pseudo-harmonic approximation. The results obtained are in good agreement with the experimental ones. The change observed in the behavior of frequencies with increasing temperature and pressure may be attributed to the peculiarities of the phase diagram of zirconium. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect