Publish In |
International Journal of Advances in Science, Engineering and Technology(IJASEAT)-IJASEAT |
Journal Home Volume Issue |
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Issue |
Volume-6, Issue-4, Spl. Iss-2 ( Dec, 2018 ) | |||||||||
Paper Title |
Effect of Mechanochemistry on Crystallite Size & Photoluminescence Properties of Matlockites Doped with Samarium Ions at Room Temperature | |||||||||
Author Name |
Lubina Thattamveedu Kasim, Nicolas Riesen, Kate Badek, Hans Riesen | |||||||||
Affilition |
School of Physical, Environmental and Mathematical Sciences, The University of New South Wales, Canberra, ACT 2600, Australia. The University of South Australia, Mawson Lakes, SA 5095, Australia. Institute for Photonics & Advanced Sensing and School of Physical Sciences, The University of Adelaide, SA 5005, Australia. | |||||||||
Pages |
12-15 | |||||||||
Abstract |
The mechanochemical synthesis of MFX (M = Ba, Sr; X = Cl, Br, I) systems doped with samarium ions in the trivalent oxidation state is reported. The crystallite size is significantly reduced as a function of milling time when stoichiometric ratios of BaCl2 or SrCl2, BaF2 or SrF2, and SmCl3.6H2O were ball-milled. The MFX:Sm3+ systems crystallize in the tetragonal P4/nmm-D4h space group. The oxidation state of samarium in the different host lattices was investigated using room temperature photoluminescence. In addition, the sample phases were analysed by Rietveld refinements of the XRD patterns. The XRD patterns show that prolonged ball-milling leads to slight contamination with zirconia from the balls and bowls of the shaker mill. This paper demonstrates that small crystallites/particles with relatively narrow size distributions can be obtained by the ball-milling route and the entire class of matlockites doped with RE2+/3+ can be prepared by this facile method. Keywords - Mechanochemical synthesis, Photoluminescence, MeFX: Sm3+ | |||||||||
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