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Stability of the bc...
Stability of the bcc phase of 4He close to the melting curve : A molecular dynamics study
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- Belonoshko, Anatoly (author)
- KTH,Kondenserade materiens teori
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Koči, L. (author)
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- Rosengren, Anders (author)
- KTH,Kondenserade materiens teori
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(creator_code:org_t)
- 2012
- 2012
- English.
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In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 85:1, s. 012503-
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We have investigated whether the Aziz et al. [J. Chem. Phys. 70, 4330 (1979)] model for (4)He renders the body-centered cubic phase more stable than the face-centered cubic phase in the proximity of the melting curve. Using molecular dynamics, we have simulated these solid phases in equilibrium with the liquid at a number of densities. In contrast to previous free energy molecular dynamics calculations, the model stabilizes the body-centered cubic phase. The stability field is just 5 degrees. wide below the melting curve at pressures around 140 Kbar and about 70 degrees wide at pressures around 750 Kbar. Considering that the body-centered cubic phase is dynamically unstable at low temperature, this result bears striking similarities to transition metal phase diagrams.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- CENTERED-CUBIC PHASE
- EARTHS CORE
- HELIUM
- IRON
- TRANSITIONS
- DIAGRAM
- EQUATION
- STATE
Publication and Content Type
- ref (subject category)
- art (subject category)
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