A behavior of a hydrogen atom of Pd0.75Ag0.25(111)

Nobuki Ozawa, Hiroshi Nakanishi, Shinichi Kunikata, Hideaki Kasai

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In this work, we calculate the adiabatic potential energy for the hydrogen atom on the Pd0.75Ag0.25(111) surface and in the subsurface using the first principles calculations based on the density functional theory. Moreover, we discuss the difference between the behaviors of the hydrogen atom on the Pd(111) and the Pd0.75Ag0.25 (111) surfaces by comparing the calculated potential energies. The results show that the potential energy minimum and an energy barrier for the hydrogen atom absorption into the bulk of the Pd0.75 Ag0.25(111) are lower than for the Pd(111) surface. It is shown that the potential energy rises when the hydrogen atom is located at a site where the nearest neighbor atoms include Ag atoms. In addition, the potential energy values Pd(111) surface and in the subsurface with lattice constant same as Pd0.75Ag 0.25 (111), show that the decreasing of the potential energy caused by Ag alloying of the Pd (111) surface and is attributed to the increase of the lattice constant.

Original languageEnglish
Pages (from-to)440-443
Number of pages4
JournalShinku/Journal of the Vacuum Society of Japan
Volume50
Issue number6
DOIs
Publication statusPublished - 2007
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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