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Synthesis and crystal structures of Ba6Mg11F34 and the solid solutions Ba6Mg11-xM(II)xF34 (M(II)=Mn,Fe)and luminescence of Ba6Mg11F34:Eu2+
|Published in||Materials Research Bulletin. 2004, vol. 39, no. 3, p. 343-355|
|Abstract||BaMgF, a new compound of the pseudobinary BaF–MgF system, has been synthesized by solid state techniques from stoichiometric amounts of BaF and MgF and its crystal structure determined by single crystal X-ray diffraction (space group P1,a=7.5084(6), b=9.9192(8), c=10.0354(8) Å, α=81.563(2), β=72.402(2), γ=71.198(1)°, 3899 structure factors, 233 parameters, R(F>2σ(F))=0.018, wR(F all) = 0.046). It is isotypic with the copper(II) analogue, BaCuF. The main features of the structure are a network of [MgF] octahedra and three different [BaF[x]] polyhedra with x=12, 11+1 and 13. BaMg[11−x]Fe[x]F and BaMg[11−x]Mn[x]F solid solutions were prepared and their composition determined by single crystal structure analyses. The luminescence properties of BaMgF doped with Eu[2+] were studied using fluorescence spectroscopy. The observed luminescence was pale blue with a maximum at 465 nm.|
|Keywords||Fluorides — X-ray diffraction — Crystal structure — Luminescence|
|Research group||Groupe Hagemann|
|KERBE, W. et al. Synthesis and crystal structures of Ba6Mg11F34 and the solid solutions Ba6Mg11-xM(II)xF34 (M(II)=Mn,Fe)and luminescence of Ba6Mg11F34:Eu2+. In: Materials Research Bulletin, 2004, vol. 39, n° 3, p. 343-355. https://archive-ouverte.unige.ch/unige:3707|