M. Quilichini, G. Heger, B. Hennion, S. Lefébvre, A. Quivy
{"title":"Inelastic neutron scattering study of acoustic modes in a monodomain AlCuFe quasicrystal","authors":"M. Quilichini, G. Heger, B. Hennion, S. Lefébvre, A. Quivy","doi":"10.1051/JPHYS:0199000510170178500","DOIUrl":null,"url":null,"abstract":"Inelastic neutron scattering results evidenced for the first time that acoustic phonon modes can be observed for a quasicrystal. The triple-axes experiments have been performed on a small monodomain Al63Cu 25Fe12 sample. The obtained TA and LA dispersion curves near to strong Bragg peaks do not show any variation with respect to different Q values. Their slopes are isotropic and do not depend on special symmetry directions; they are comparable to those of corresponding curves for pure aluminium. We have not been able to observe energy gaps in our measurements.","PeriodicalId":14747,"journal":{"name":"Journal De Physique","volume":"51 1","pages":"1785-1790"},"PeriodicalIF":0.0000,"publicationDate":"1990-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"29","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal De Physique","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1051/JPHYS:0199000510170178500","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 29
Abstract
Inelastic neutron scattering results evidenced for the first time that acoustic phonon modes can be observed for a quasicrystal. The triple-axes experiments have been performed on a small monodomain Al63Cu 25Fe12 sample. The obtained TA and LA dispersion curves near to strong Bragg peaks do not show any variation with respect to different Q values. Their slopes are isotropic and do not depend on special symmetry directions; they are comparable to those of corresponding curves for pure aluminium. We have not been able to observe energy gaps in our measurements.
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