Crystal structures and X-ray powder diffraction data for Cs2NiSi5O12, RbGaSi2O6, and CsGaSi2O6 synthetic leucite analogues

Autor: Alex H. Stone, Anthony M. T. Bell

Publikováno v: Powder Diffraction. 36:273-281

Leucites are tetrahedrally coordinated silicate framework structures with some of the silicon framework cations partially replaced by divalent or trivalent cations. These structures have general formulae A2BSi5O12 and ACSi2O6; where A is a monovalent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63547ea47581795e5cf639c6ccf1742d
https://doi.org/10.1017/s0885715621000580

Monoclinic–orthorhombic first-order phase transition in K2ZnSi5O12 leucite analogue; transition mechanism and spontaneous strain analysis

Autor: Francis Clegg, Anthony M. T. Bell, Christopher M.B. Henderson

Publikováno v: Mineralogical Magazine. 85:752-771

Hydrothermally synthesised K2ZnSi5O12 has a polymerised framework structure with the same topology as leucite (KAlSi2O6, tetragonal I41/a), which has two tetrahedrally coordinated Al3+ cations replaced by Zn2+ and Si4+. At 293 K it has a cation-order

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3993653e82c2b85cfecc33986737ba1
https://doi.org/10.1180/mgm.2021.67

Physical properties and sinterability of pure and iron-doped bismuth sodium titanate ceramics

Autor: Khalid Rmaydh Muhammed, Anthony M. T. Bell, Alex Scrimshire, Iasmi Sterianou, Paul A. Bingham

Publikováno v: Journal of the Australian Ceramic Society. 56:1441-1449

Pure (BNT) and iron-doped bismuth sodium titanate (Fe-BNT) ceramics were produced according to the formula Bi0.5Na0.5Ti1−xFexO3−0.5x, where x = 0 to 0.1. The addition of Fe2O3 enables decreasing the sintering temperature to 900 °C in comparison

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https://doi.org/10.1007/s41779-020-00461-5

A study of possible extra-framework cation ordering in Pbca leucite structures with stoichiometry RbCsX2+Si5O12 (X = Mg, Ni, Cd)

Autor: C. Michael B. Henderson, Anthony M. T. Bell

Publikováno v: Powder Diffraction. 34:S2-S7

Leucites are silicate framework structures with some of the silicon framework cations partially replaced by divalent or trivalent cations. A monovalent extraframework alkali metal cation is also incorporated to balance the charges. We have previously

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f451bb483d3e7f18d61b3401cb98d147
https://doi.org/10.1017/s0885715619000071

Site-selective characterisation of electron trapping centres in relation to chemistry, structural state and mineral phases present in single crystal alkali feldspars

Autor: Helen M. Roberts, Mayank Jain, Svenja Riedesel, Geoff A. T. Duller, Anthony M. T. Bell, Raju Kumar

Publikováno v: Riedesel, S, Kumar, R, Duller, G A T, Roberts, H M, Bell, A M T & Jain, M 2021, ' Site-selective characterisation of electron trapping centres in relation to chemistry, structural state and mineral phases present in single crystal alkali feldspars ', Journal of Physics D: Applied Physics, vol. 54, no. 38, 385107 . https://doi.org/10.1088/1361-6463/ac10d7

Feldspars are ubiquitous natural dosimeters widely used in luminescence dating. Despite decades of research, the lattice defects as well as the mechanisms involved in luminescence production in feldspars remain poorly understood. The recently develop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7251cc0b358dc095df3d58da08e02c4
https://orbit.dtu.dk/en/publications/bec1795e-933c-41c2-b1c7-79fabed33b02