Pressure and temperature effects on the Γ, N and L-phonons in zirconium |
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| Authors: | S A Ostanin E I Salamatov V Yu Trubitsin |
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| Institution: | 1. Department of Physics and Astronomy , University of Glasgow , Glasgow, G12 8QQ, Scotland, UK;2. Physico-Technical Institute, Ural Branch of Russian Academy of Sciences , 132 Kirov Str., 426001, Izhevsk, Russia |
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| Abstract: | Abstract The effective potentials for the E2g,-phonon at the T point of the Brillouin zone of hep Zr, the transverse N- and longitudinal L-phonons 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 stability of the hep, bec and ω phases of zirconium at different temperatures and pressures is discussed. |
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| Keywords: | Phonon Phase transitions Zirconium Structure |
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