First-principles calculations of pure elements: Equations of state and elastic stiffness constants

S. L. Shang, A. Saengdeejing, Z. G. Mei, D. E. Kim, H. Zhang, S. Ganeshan, Y. Wang, Z. K. Liu

Research output: Contribution to journalArticlepeer-review

229 Citations (Scopus)


Using the projector-augmented wave method within the generalized gradient approximation, a systematic first-principles calculation for energy vs. volume (E-V) equations of state (EOS's) and single crystal elastic stiffness constants (cij's) has been performed for 76 pure elemental solids with face-centered-cubic (fcc), body-centered-cubic (bcc), and hexagonal-close-packed (hcp) crystal structures, wherein the cij's are determined by an efficient strain-stress method, and the EOS's are fitted by a 4-parameter Birch-Murnaghan equation upon the first-principles E-V data points. Based on the predicted EOS's and cij's, the phase transition pressures between bcc, fcc, and hcp structures, as well as the structural stabilities and the polycrystalline aggregate properties including bulk modulus (B), shear modulus (G), B/G ratio, and anisotropy ratio have been analyzed for pure elements and compared with available experimental data. The present systematic studies of pure elements provide not only the EOS's and cij's but also the benchmarks of first-principles calculations.

Original languageEnglish
Pages (from-to)813-826
Number of pages14
JournalComputational Materials Science
Issue number4
Publication statusPublished - 2010 Jun
Externally publishedYes


  • Elastic stiffness constants
  • Equations of state
  • First-principles calculations
  • Pure elements

ASJC Scopus subject areas

  • Computer Science(all)
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Computational Mathematics


Dive into the research topics of 'First-principles calculations of pure elements: Equations of state and elastic stiffness constants'. Together they form a unique fingerprint.

Cite this