Comparison of Surface Energy of Bcc Alkali Metals and Transition Metals Using Maeam

Authors

  • Akpata Erhieyovwe Department of Physics, University of Benin, Edo State, Nigeria
  • Enaibe A Edison Department of Physics, Federal University of Petroleum Resources, Effurun, Delta State, Nigeria
  • S.E Iyayi Department of Physics, Ambrose Alli University, Ekpoma, Edo State, Nigeria

DOI:

https://doi.org/10.18488/journal.75/2014.1.1/75.1.34.41

Abstract

The surface energies of the low index (100), (110) and (111) planes of some bcc alkali metals (Li,Na,K,Rb,Cs) and for the bcc transition metals (Fe,W,Mo,Cr,Ta,Nb and V) have been calculated using the Modified Analytical Embedded Atom Method (MAEAM).The surface energy of each (hkl) plane in alkali metals was found to be much more lower than those of the transition metals. The experimental values of surface energies are not tied to specific surfaces and are obtained for polycrystalline materials. They do not correlate with computed values published for any of these surfaces. This is expected since experiments give direct results. For all bcc metals the order of the surface energy is such that Es(110) < Es(100) < Es(111) which is in agreement with the results obtained except for (111) surface. Our calculated result shows that Es(111) < Es(110) < Es(100). This is not in agreement with the result of MAEAM.[1]

Keywords:

Alkali metals, Body centered cubic, Embedded atom method, Modified analytical embedded atom method, Surface energy, (HKL) plane

Published

2014-06-16

How to Cite

Erhieyovwe, A. ., Edison, E. A., & Iyayi, S. (2014). Comparison of Surface Energy of Bcc Alkali Metals and Transition Metals Using Maeam. Review of Advances in Physics Theories and Applications, 1(1), 34–41. https://doi.org/10.18488/journal.75/2014.1.1/75.1.34.41

Issue

Vol. 1 No. 1 (2014)

Section

Articles