2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
[R2P-05]Synthesis and luminescence of Ce-doped merrillite「発表賞エントリー」
*Shintaro Niiyama1, Reiko Simura2, Kazumasa Sugiyama3(1. Tohoku Univ. , 2. IMRAM, Tohoku Univ., 3. IMR, Tohoku Univ.)
Keywords:
apatite,phosphate,cerium,photoluminescence,XAFS
Natural minerals of apatite and merrillite act as the host crystals for the rare earth elements. Recently, we have synthesized the compound Ca9Ce(PO4)7 by using solid state reaction. The measurements of photoluminescence and XAFS clearly indicate that the included Ce is trivalent state. In addition, as a result of single crystal structure analysis, the merrillite-type structure Ca9Ce(PO4)7 (R3c; a=10.500 (2), c=7.564 (4)) was confirmed.