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Molybdenum at High ...
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Belonoshko, Anatoly B.KTH,Kondenserade materiens teori,Department of Material Science and Engineering The Royal Institute of Technology
(author)
Molybdenum at High Pressure and Temperature : Melting from Another Solid Phase
- Article/chapterEnglish2008
Publisher, publication year, extent ...
Numbers
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LIBRIS-ID:oai:DiVA.org:liu-44659
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-44659URI
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https://doi.org/10.1103/PhysRevLett.100.135701DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-110436URI
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-17434URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20100525
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The Gibbs free energies of bcc and fcc Mo are calculated from first principles in the quasiharmonic approximation in the pressure range from 350 to 850 GPa at room temperatures up to 7500 K. It is found that Mo, stable in the bcc phase at low temperatures, has lower free energy in the fcc structure than in the bcc phase at elevated temperatures. Our density-functional-theory-based molecular dynamics simulations demonstrate that fcc melts at higher than bcc temperatures above 1.5 Mbar. Our calculated melting temperatures and bcc-fcc boundary are consistent with the Mo Hugoniot sound speed measurements. We find that melting occurs at temperatures significantly above the bcc-fcc boundary. This suggests an explanation of the recent diamond anvil cell experiments, which find a phase boundary in the vicinity of our extrapolated bcc-fcc boundary.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Burakovsky, L.Theoretical Division Los Alamos National Laboratory
(author)
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Simak, Sergey,1967-Linköpings universitet,Tekniska högskolan,Teoretisk Fysik(Swepub:liu)sersi78
(author)
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Johansson, BörjeKTH,Uppsala universitet,Kondenserade materiens teori (Fysik IV),Tillämpad materialfysik,Department of Material Science and Engineering The Royal Institute of Technology(Swepub:kth)u13m8u34
(author)
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Mikhaylushkin, Arkady,1977-Linköpings universitet,Tekniska högskolan,Teoretisk Fysik(Swepub:liu)arkmi35
(author)
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Preston, D.L.Physics Division Los Alamos National Laboratory
(author)
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Simak, Sergey,1967-Linköpings universitet,Tekniska högskolan,Teoretisk Fysik(Swepub:liu)sersi78
(author)
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Swift, D.C.Physics Division Los Alamos National Laboratory
(author)
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KTHKondenserade materiens teori
(creator_code:org_t)
Related titles
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In:Physical review letters / publ. by the American Physical Society100:13, s. 135701-
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In:Physical Review Letters100:13, s. 135701-0031-90071079-7114
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