Surface phonon dispersion curves of NiAl(111)

Kazuo Kitamura, Tadaaki Nagao, Toshiaki Osaka, Rene Franchy, Chuhei Oshima

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Abstract

The surface phonon dispersion curves of the NiAl(111) surface have been measured along Γ̄K̄ of the two dimensional Brillouin zone by means of high-resolution energy loss spectroscopy. The observed dispersion curves were compared with lattice dynamical calculations of a slab shaped crystal on the basis of a force constant model including up to the third nearest-neighbor interaction. Good agreement between the experimental and calculated curves was obtained for two different combinations of the surface force constants, which suggests the existence of two different models concerning the surface atomic relaxation.

Original languageEnglish
Pages (from-to)3252-3256
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume32
Issue number7
Publication statusPublished - 1993 Jul

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Kitamura, K., Nagao, T., Osaka, T., Franchy, R., & Oshima, C. (1993). Surface phonon dispersion curves of NiAl(111). Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 32(7), 3252-3256.