Five-parameter equation of state for solids correctly incorporating cohesive energy data

doi:10.1088/1674-1056/20/8/080508

中国物理B ›› 2011, Vol. 20 ›› Issue (8): 80508-080508.doi: 10.1088/1674-1056/20/8/080508

Five-parameter equation of state for solids correctly incorporating cohesive energy data

田荣刚, 孙久勋

Department of Applied Physics, University of Electronic Science and Technology, Chengdu 610054, China

收稿日期:2010-11-25 修回日期:2011-04-01 出版日期:2011-08-15 发布日期:2011-08-15
基金资助:
Project supported by the Joint Fund of National Natural Science Foundation of China and China Academy of Engineering Physics (Grant No. 10876008), the New Century Excellent Researcher Award Program from the Educational Ministry of China (Grant No. NCET-05-0799), and the Academic Excellence of University of Electronic Science and Technology of China (Grant No. 23601008).

Five-parameter equation of state for solids correctly incorporating cohesive energy data

Tian Rong-Gang(田荣刚) and Sun Jiu-Xun(孙久勋)^†

Department of Applied Physics, University of Electronic Science and Technology, Chengdu 610054, China

Received:2010-11-25 Revised:2011-04-01 Online:2011-08-15 Published:2011-08-15
Supported by:
Project supported by the Joint Fund of National Natural Science Foundation of China and China Academy of Engineering Physics (Grant No. 10876008), the New Century Excellent Researcher Award Program from the Educational Ministry of China (Grant No. NCET-05-0799), and the Academic Excellence of University of Electronic Science and Technology of China (Grant No. 23601008).

摘要/Abstract

摘要： A five-parameter equation of state (EOS) is proposed to correctly incorporate the cohesive energy data in it without physically incorrect oscillations. The proposed EOS is applied to 10 selected metals. It is shown that the calculated compression curves are in good accordance with the experimental data. The values of the bulk modulus and its derivative with respect to pressure extracted from the proposed EOS remain almost unchanged while the data range used is varied.

Abstract: A five-parameter equation of state (EOS) is proposed to correctly incorporate the cohesive energy data in it without physically incorrect oscillations. The proposed EOS is applied to 10 selected metals. It is shown that the calculated compression curves are in good accordance with the experimental data. The values of the bulk modulus and its derivative with respect to pressure extracted from the proposed EOS remain almost unchanged while the data range used is varied.

Key words: equation of state, cohesive energy, physically incorrect oscillations

中图分类号: (Thermodynamic functions and equations of state)

05.70.Ce

64.30.Ef (Equations of state of pure metals and alloys) 62.50.-p (High-pressure effects in solids and liquids)

田荣刚, 孙久勋. Five-parameter equation of state for solids correctly incorporating cohesive energy data[J]. 中国物理B, 2011, 20(8): 80508-080508.

Tian Rong-Gang(田荣刚) and Sun Jiu-Xun(孙久勋). Five-parameter equation of state for solids correctly incorporating cohesive energy data[J]. Chin. Phys. B, 2011, 20(8): 80508-080508.

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Five-parameter equation of state for solids correctly incorporating cohesive energy data

Five-parameter equation of state for solids correctly incorporating cohesive energy data

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