A comparative study of the atomic dynamics of icosahedral ZnMgHo and ZnMgEr by neutron inelastic scattering

The atomic dynamics of the Frank-Kasper type of FI icosahedral alloys ZnMgHo and ZnMgEr have been determined at 200 K using thermal neutron energy loss scattering. From the sum of all double differential scattering cross-sections d exp 2 sigma /(d Omega dE) weighted with sin( theta ) the generalized...

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Published inJournal of alloys and compounds Vol. 342; no. 1-2; pp. 314 - 317
Main Authors Rouijaa, M, Suck, J-B, Sterzel, R, Petrenko, O A
Format Journal Article
LanguageEnglish
Published 24.09.2001
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Summary:The atomic dynamics of the Frank-Kasper type of FI icosahedral alloys ZnMgHo and ZnMgEr have been determined at 200 K using thermal neutron energy loss scattering. From the sum of all double differential scattering cross-sections d exp 2 sigma /(d Omega dE) weighted with sin( theta ) the generalized vibrational density of states (GVDOS) was calculated. The calculated GVDOS consists of two bands, a dominant one centered around 20 meV, which is composed of several subbands, and a rather weak one centered around 50 meV. Both alloys show very much the same atomic dynamics with small differences near 15, 22 and 38 meV.
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ISSN:0925-8388