Improving the understanding of the melting behaviour of Mo, Ta, and W at extreme pressures
arXiv:cond-mat/0408186 · doi:10.1016/j.physb.2004.11.087
Abstract
We discus existent conflicts between experimentally measured and theoretically calculated melting curves of Mo, Ta, and W. By assuming that vacancy formation plays a fundamental role in the melting process, an explanation for the measured melting curves is provided. Furthermore, we show that the Lindemann law fits well all the measured melting curves of bcc transition metals if the Grueneisen parameter is written as a power series of the interatomic distance. For completeness, we examine possible reasons for current disagreements between shock-wave and DAC experiments. To solve them, we propose the existence of an extra high P-T phase for Mo, Ta, and W
23 pages, 4 figures, 1 table
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Cited by in corpus (8)
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- Predicted alternative structure for tantalum metal under high pressure and high temperature
- Melting curve and Hugoniot of molybdenum up to 400 GPa by ab initio simulations
- The influence of boundaries on high pressure melting experiments
- Nonlinearity of the post-spinel transition and its expression in slabs and plumes worldwide