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Chinese Journal of High Pressure Physics  > 2008  >  22(4): 337-342 .
MA Gui-Cun, LIU Wei-Feng. Phonon Spectrum and Elastic Constants of Copper at High Pressure[J]. Chinese Journal of High Pressure Physics, 2008, 22(4): 337-342 . doi: 10.11858/gywlxb.2008.04.001
Citation: MA Gui-Cun, LIU Wei-Feng. Phonon Spectrum and Elastic Constants of Copper at High Pressure[J]. Chinese Journal of High Pressure Physics, 2008, 22(4): 337-342 . doi: 10.11858/gywlxb.2008.04.001
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Phonon Spectrum and Elastic Constants of Copper at High Pressure

doi: 10.11858/gywlxb.2008.04.001

  • Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

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  • Corresponding author: MA Gui-Cun
  • Received Date: 09 Jan 2008
  • Rev Recd Date: 23 Sep 2008
  • Issue Publish Date: 05 Dec 2008
    Abstract
  • Based on the embbeded atom method (EAM) of Foiles, Baskes and Daw, We have established the EAM potential of Copper by using Vinet-Rose universal equation of state. Phonon spectrum and elastic constant of copper at high pressure are calculated by first principle perturbation theory and embedded atom methods. Through properly adjustment of the parameters in EAM potential, we get almostly the same results for the two methods. Furthermore the spectrum of phonons and the specific heat of lattice are all coincide with the experimental values.

     

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