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Structure and morphology of scintillating Ce- and Pb-doped strontium hafnate powders

✍ Scribed by Alessandro Lauria; Norberto Chiodini; Eva Mihokova; Federico Moretti; Angeloclaudio Nale; Martin Nikl; Anna Vedda

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
642 KB
Volume
32
Category
Article
ISSN
0925-3467

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✦ Synopsis

We use acetate-citrate combustion to prepare SrHfO 3 powders both undoped and doped with Ce 3+ and Pb 2+ ions in several concentrations, from 0.01 up to 3 mol%. The evolution of their morphological and structural features during the sintering process is studied by scanning electron microscopy, X-ray diffraction, and Raman experiments. We discuss the dependence of the optical properties, investigated by radioluminescence and time resolved luminescence, on sintering conditions and material structure.

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Structure, stoichiometry and phase purity of strontium-doped lanthanum manganite powders
✍ R. Millini; M. F. Gagliardi; G. Piro πŸ“‚ Article πŸ“… 1994 πŸ› Springer 🌐 English βš– 390 KB

Strontium-doped lanthanum manganite Lal-xSrxMnOa (LSM) is characterized by hexagonal-rhombohedral distorted perovskite-type structure, deriving from the ideal cubic symmetry through rotation of the [MnO6] octahedra around the ternary axis. The extent of distortion and unit cell volume depend on Sr c