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dc.contributor.author Wilding, Martin C.
dc.contributor.author Guthrie, Malcolm
dc.contributor.author Bull, Craig L.
dc.contributor.author Tucker, Matt G.
dc.contributor.author McMillan, Paul F.
dc.date.accessioned 2010-01-15T12:53:13Z
dc.date.available 2010-01-15T12:53:13Z
dc.date.issued 2008-06-18
dc.identifier.citation Wilding , M C , Guthrie , M , Bull , C L , Tucker , M G & McMillan , P F 2008 , ' Feasibility of in situ neutron diffraction studies of non-crystalline silicates up to pressures of 25 GPa ' Journal of Physics: Condensed Matter , vol 20 , no. 24 , 244122 . , 10.1088/0953-8984/20/24/244122 en
dc.identifier.issn 0953-8984
dc.identifier.other PURE: 143570
dc.identifier.other dspace: 2160/3993
dc.identifier.uri http://hdl.handle.net/2160/3993
dc.description Wilding, M. C., Guthrie, M., Bull, C. L., Tucker, M. G., McMillan, P. F. (2008). Feasibility of in situ neutron diffraction studies of non-crystalline silicates up to pressures of 25 GPa. Journal of Physics: Condensed Matter, 20 (24). Sponsorship: EPSRC; Aberystwyth University Research; HEFCW en
dc.description.abstract There is an increasing interest in the structural modifications found in liquids and amorphous systems as a function of pressure. Neutron diffraction is a key technique for determining these structures, but its application in high pressure studies remains in its infancy. Recent developments now permit in situ neutron scattering studies of amorphous materials to very high pressure conditions. Here we present new data for MgO–SiO2 and SiO2 glasses collected at up to 8.6 and 24 GPa respectively, using two distinct high pressure anvil geometries. The data collected on the MgO–SiO2 system appear to be reliable, and suggest strong changes in the chemical ordering. In contrast, the higher pressure SiO2 data highlight significant difficulties in performing appropriate corrections for pressure-dependent background and attenuation effects. These challenges are discussed, and future improvements to the technique are proposed. en
dc.format.extent 7 en
dc.language.iso eng
dc.relation.ispartof Journal of Physics: Condensed Matter en
dc.subject COORDINATION CHANGES en
dc.subject TEMPERATURES en
dc.subject SIO2 GLASS en
dc.subject TRANSITION en
dc.subject X-RAY-DIFFRACTION en
dc.subject POLYAMORPHISM en
dc.subject PARIS-EDINBURGH CELL en
dc.subject MOLECULAR-DYNAMICS en
dc.subject POWDER DIFFRACTION en
dc.subject LIQUID SILICA en
dc.title Feasibility of in situ neutron diffraction studies of non-crystalline silicates up to pressures of 25 GPa en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1088/0953-8984/20/24/244122
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.contributor.institution Materials Research en
dc.description.status Peer reviewed en


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