Abstract
Using cold and thermal neutron inelastic scattering at the Institut Laue-Langevin, Grenoble and at ISIS, UK, respectively, we determined the total dynamic structure factor S(Q,w) and the generalised vibrational density-of-states G(w) of decagonal Zn58Mg40Y2. We ompare these quantities with those determined earlier for the icosahedral phase in the same quasicrystal system of Frank-Kasper type. In spite of a considerably different intensity distribution in both quantities, the main bands in the angular averaged dispersion relations of both structures are surprisingly similar and two main bands even agree quite well with the main bands in the dispersion relation of glassy Zn30Mg70. This leads to the conclusion that the main bands are element specific and that the elements in this energy region vibrate largely independent of each other. This interpretation is supported by recent computer simulation of the dynamics of approximants to both aperiodic structures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
