Melting of bcc transition metals and icosahedral clustering

被引:18
作者
Ross, Marvin
Boehler, Reinhard
Japel, Stefanie
机构
[1] Max Planck Inst Chem, D-55020 Mainz, Germany
[2] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA
关键词
D O I
10.1016/j.jpcs.2006.05.009
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In contrast to polyvalent metals, transition metals have low melting slopes (dT/dP) that are due to partially filled d-bands that allow for a lowering of liquid phase energy through s-d electron transfer and the formation of local structures. In the case of bcc transition metals, we show that the apparent discrepancy of diamond-anvil cells (DAC) melting measurements with shock melting of Mo can be understood by reexamining the shock data for V and Ta and introducing the presence of an icosahedral short range order (ISRO) melt phase. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2178 / 2182
页数:5
相关论文
共 30 条
[1]   Electronic and atomic structure, and magnetism of transition-metal clusters [J].
Alonso, JA .
CHEMICAL REVIEWS, 2000, 100 (02) :637-677
[2]   Melting curve of aluminum in a diamond cell to 0.8 Mbar: implications for iron [J].
Boehler, R ;
Ross, M .
EARTH AND PLANETARY SCIENCE LETTERS, 1997, 153 (3-4) :223-227
[3]   TEMPERATURES IN THE EARTHS CORE FROM MELTING-POINT MEASUREMENTS OF IRON AT HIGH STATIC PRESSURES [J].
BOEHLER, R .
NATURE, 1993, 363 (6429) :534-536
[4]  
Brown J.M., 1983, SHOCK WAVES CONDENSE
[5]  
DAI C, 2002, J PHYS D, V34, P3064
[6]  
DEWITT HE, 1979, STRONGLY COUPLED PLA, P81
[7]   POLYMORPHIC PHASE-TRANSITION FOR INVERSE-POWER-POTENTIAL CRYSTALS KEEPING THE FIRST-ORDER ANHARMONIC CORRECTION TO THE FREE-ENERGY [J].
DUBIN, DHE ;
DEWITT, H .
PHYSICAL REVIEW B, 1994, 49 (05) :3043-3048
[8]   ELASTIC MODULI OF TRANSITION METALS [J].
DUCASTELLE, F .
JOURNAL DE PHYSIQUE, 1970, 31 (11-1) :1055-+
[9]   Improving the understanding of the melting behaviour of Mo, Ta, and W at extreme pressures [J].
Errandonea, D .
PHYSICA B-CONDENSED MATTER, 2005, 357 (3-4) :356-364
[10]   Melting of tantalum at high pressure determined by angle dispersive x-ray diffraction in a double-sided laser-heated diamond-anvil cell [J].
Errandonea, D ;
Somayazulu, M ;
Häusermann, D ;
Mao, HK .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (45) :7635-7649