Comment on "Phase diagram of MgO from density-functional theory and molecular-dynamics simulations"

被引:8
作者
Belonoshko, AB [1 ]
机构
[1] Uppsala Univ, Dept Phys, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden
来源
PHYSICAL REVIEW B | 2001年 / 63卷 / 09期
关键词
D O I
10.1103/PhysRevB.63.096101
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The paper by Strachan et al. [Phys. Rev. B 60, 15 084 (1999)] presents a theoretical phase diagram for MgO. I argue that the B1-liquid phase boundary and the triple point B1-B2-liquid, if calculated correctly using the same model for MgO, might be significantly different from the presented ones. I argue further that the chosen method for calculating the B1-liquid boundary does not provide melting temperatures with a reasonable accuracy, is more time consuming than the two-phase simulation method, and less precise. The only molecular-dynamics simulation in which the MgO melting curve was determined is that by Belonoshko and Dubrovinsky.
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页数:2
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共 11 条
[1]  
Belonoshko AB, 1996, AM MINERAL, V81, P303
[2]   MOLECULAR-DYNAMICS OF MGSIO3 PEROVSKITE AT HIGH-PRESSURES - EQUATION OF STATE, STRUCTURE, AND MELTING TRANSITION [J].
BELONOSHKO, AB .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1994, 58 (19) :4039-4047
[3]   Quasi ab initio molecular dynamic study of Cu melting [J].
Belonoshko, AB ;
Ahuja, R ;
Eriksson, O ;
Johansson, B .
PHYSICAL REVIEW B, 2000, 61 (06) :3838-3844
[4]   Embedded-atom molecular dynamic study of iron melting [J].
Belonoshko, AB ;
Ahuja, R .
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 1997, 102 (3-4) :171-184
[5]   Molecular and lattice dynamics study of the MgO-SiO2 system using a transferable interatomic potential [J].
Belonoshko, AB ;
Dubrovinsky, LS .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1996, 60 (10) :1645-1656
[6]   Melting of corundum using conventional and two-phase molecular dynamic simulation method [J].
Belonoshko, AB .
PHYSICS AND CHEMISTRY OF MINERALS, 1998, 25 (02) :138-141
[7]  
COHEN RE, 1998, HIGH PRESSURE TEMPER, P185
[8]   MELTING LINE OF ALUMINUM FROM SIMULATIONS OF COEXISTING PHASES [J].
MORRIS, JR ;
WANG, CZ ;
HO, KM ;
CHAN, CT .
PHYSICAL REVIEW B, 1994, 49 (05) :3109-3115
[9]   Phase diagram of MgO from density-functional theory and molecular-dynamics simulations [J].
Strachan, A ;
Çagin, T ;
Goddard, WA .
PHYSICAL REVIEW B, 1999, 60 (22) :15084-15093
[10]   The melting of MgO - Computer calculations via molecular dynamics [J].
Vocadlo, L ;
Price, GD .
PHYSICS AND CHEMISTRY OF MINERALS, 1996, 23 (01) :42-49