クリストバライトの静水圧圧縮により得られるSiO_2の新しい高圧相-結晶格子に与える清水圧性の影響- [in Japanese] A new high pressure phase of SiO_2 formed by hydrostatic compression of cristobalite -Effect of non-hydrostatic stress on the crystal lattice- [in Japanese]
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Cristobalite was compressed under various degree of hydrostaticity in this work. It was clarified that, under high pressure, non-hydrostatic stress affects the crystal structure of high pressure polymorph. A new polymorph of SiO<SUB>2</SUB> was formed under quasi-hydrostatic compression of cristobalite. While the crystal structure of this new polymorph is very similar to that of rutile-type, lattice parameters are different from that of stishovite. No systematic study to clarify the effects of non-hydrostatic stress has ever been made. The effect of non-hydrostatic stress on the crystal lattice was discussed in this paper.
X-RAYS 40(6), 403-408, 1998-12-31
The Crystallographic Society of Japan