Show simple item record Greaves, George Meneau, F. Majerus, O. Jones, Daniel Garfield 2008-12-10T08:53:37Z 2008-12-10T08:53:37Z 2005-05-27
dc.identifier.citation Greaves , G , Meneau , F , Majerus , O & Jones , D G 2005 , ' Identifying vibrations that destabilize crystals and characterize the glassy state ' Science , vol 308 , pp. 1299-1302 . DOI: 10.1126/science.1109411 en
dc.identifier.issn 0036-8075
dc.identifier.other PURE: 89960
dc.identifier.other PURE UUID: 03741486-6894-4392-a3fd-52cc1db72469
dc.identifier.other dspace: 2160/1497
dc.description Greaves, George; Meneau, F.; Majerus, O.; Jones, D.G., (2005) 'Identifying vibrations that destabilize crystals and characterize the glassy state', Science 308(5726) pp.1299-1302 RAE2008 en
dc.description.abstract High-resolution inelastic neutron scattering was used to identify major sources of low-frequency vibrations in zeolite crystals. Dispersed and nondispersed modes were found, both of which are prominent in the early stages of compressive amorphization but decline dramatically in strength once a glass of conventional density is created. By identifying the dispersed modes with the characteristic vibrations of the various secondary building units of zeolitic structures, the Boson peak, a characteristic of the glassy state, can be attributed to vibrations within connected rings of many different sizes. The nondispersed phonon features in zeolites, retained in the amorphized glass, were also replicated in silica. These modes are librational in origin and are responsible for destabilizing the microporous crystalline structure, for converting the resulting glass from a low- to a high-density phase, and for the associated changes in network topology that affect the Boson peak. en
dc.format.extent 4 en
dc.language.iso eng
dc.relation.ispartof Science en
dc.rights en
dc.title Identifying vibrations that destabilize crystals and characterize the glassy state en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.description.status Peer reviewed en

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