Structure of rare-earth chalcogenide glasses by neutron and x-ray diffraction. (28th April 2017)

• Record Type: Journal Article
• Authors: Drewitt, James W E; Salmon, Philip S; Zeidler, Anita; Benmore, Chris J; Hannon, Alex C
• Is Part Of: Journal of physics. Volume 29:Number 22(2017)
• Publication Date: 2017-04-28
• Subjects: glass structure -- neutron diffraction -- x-ray diffraction -- rare-earth clustering; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aa68c0
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The method of neutron diffraction with isomorphic substitution was used to measure the structure of the rare-earth chalcogenide glasses ( R 2 X 3 ) 0.07 (Ga2 X 3 )0.33 (Ge X 2 )0.60 with R = L a or Ce and X = S or Se. X-ray diffraction was also used to measure the structure of the sulphide glass. The results are consistent with networks that are built from Ge X 4 and Ga X 4 tetrahedra, and give R –S and R –Se coordination numbers of 8.0(2) and 8.5(4), respectively. The minimum nearest-neighbour R – R distance associated with rare-earth clustering is discussed.