Orientational ordering of three SiO4 tetrahedra in α″L-Ca1.5Sr0.5SiO4 that satisfies bond-valence requirements and avoids O-O repulsion

Hironori Itoh, Fumito Nishi, Takahiro Kuribayashi, Yasuhiro Kudoh

研究成果: Article査読

8 被引用数 (Scopus)

抄録

The crystal structure of α″L-Ca1.55(4)Sr0.45(4)SiO4 was analyzed by single-crystal X-ray diffraction. Refinement with isotropic temperature factors yielded R = 5.4%. The occupancies of the M(11), M(12), M(13), M(21), M(22), and M(23) sites by Sr are 0.40(3), 0.37(3), 0.42(3), 0.11(3), 0.04(2), and 0, respectively. The structure contains SiO4 tetrahedra in three different orientations. The orientational ordering of the Si(n)O4 (n = 1-3) tetrahedra accommodates the M(1n)-O (n = 1-3) bond-valence unbalances caused by the ionic radii mismatch and also avoids increasing the O-O electric repulsions between adjacent Si(n)O4 tetrahedra.

本文言語English
ページ(範囲)234-240
ページ数7
ジャーナルJournal of Mineralogical and Petrological Sciences
104
4
DOI
出版ステータスPublished - 2009 8

ASJC Scopus subject areas

  • Geophysics
  • Geology

フィンガープリント 「Orientational ordering of three SiO<sub>4</sub> tetrahedra in α″<sub>L</sub>-Ca<sub>1.5</sub>Sr<sub>0.5</sub>SiO<sub>4</sub> that satisfies bond-valence requirements and avoids O-O repulsion」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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