Successive change in work function of Al exposed to air

M. Uda, Y. Nakagawa, T. Yamamoto, M. Kawasaki, A. Nakamura, T. Saito, K. Hirose

研究成果: Article

17 引用 (Scopus)

抜粋

Aluminum surface freshly shaven with a steel knife showed significant changes in work functions from 3.25 to 3.60 eV within one day. Successive changes of the work functions were measured in air using the open counter. XPS spectra showed no change fundamentally when the fresh Al surface was exposed to air for 1 min and 24 h. Molecular orbital calculations by use of the DV-X α method predicted an appearance of an additional local density of state near the Fermi edge when an Al-Al distance becomes large. Based on the experimental results and calculations, we proposed formation of an interface between an Al matrix and a surface oxide or oxyhydroxide, which has a stress induced density of state. This state appears at the beginning of air exposure and disappears after the lapse of time because such stress is released after rearrangement of surface and interface structures.

元の言語English
ページ(範囲)767-771
ページ数5
ジャーナルJournal of Electron Spectroscopy and Related Phenomena
88-91
出版物ステータスPublished - 1998 3 1

    フィンガープリント

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

これを引用

Uda, M., Nakagawa, Y., Yamamoto, T., Kawasaki, M., Nakamura, A., Saito, T., & Hirose, K. (1998). Successive change in work function of Al exposed to air. Journal of Electron Spectroscopy and Related Phenomena, 88-91, 767-771.