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dc.contributor.author Meneau, F.
dc.contributor.author Majerus, O.
dc.contributor.author Greaves, George
dc.contributor.author Jones, D. G.
dc.date.accessioned 2008-12-10T08:53:37Z
dc.date.available 2008-12-10T08:53:37Z
dc.date.issued 2005-05-27
dc.identifier.citation Meneau , F , Majerus , O , Greaves , G & Jones , D G 2005 , ' Identifying vibrations that destabilize crystals and characterize the glassy state ' Science , vol 308 , pp. 1299-1302 . , 10.1126/science.1109411 en
dc.identifier.issn 0036-8075
dc.identifier.other PURE: 89960
dc.identifier.other dspace: 2160/1497
dc.identifier.uri http://hdl.handle.net/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.title Identifying vibrations that destabilize crystals and characterize the glassy state en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1126/science.1109411
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.contributor.institution Mathematics and Physics en
dc.description.status Peer reviewed en


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