Synthesis of γ-Mg2SiO4 |
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| Authors: | Eiji Ito Yoshito Matsui Kaichi Suito Naoto Kawai |
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| Institution: | Institute for Thermal Spring Research, Okayama University, Okayama, Japan;Department of Material Physics, Faculty of Engineering Science, Osaka University, Osaka, Japan |
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| Abstract: | Magnesium orthosilicate with spinel structure (γ-Mg2SiO4) was synthesized at about 250 kbar and 1000°C. Unit cell dimension was established to be 8.076 ± 0.001Å. X-ray powder diffraction pattern revealed a significant difference between γ-Mg2SiO4 and other γ-M2SiO4 spinels (M = Fe, Co, and Ni) in the intensities of (111) and (331) reflections, both of which are virtually absent in the Mg2SiO4 spinel. This feature could be thoroughly understood by the calculation of the intensities for several silicate spinels. |
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