Surface phonon dispersion curves of NiAl(111)

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

研究成果: Article査読

7 被引用数 (Scopus)


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.

ジャーナルJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
出版ステータスPublished - 1993 7

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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