NDLI: Tilting and distortion of CaSnO3 perovskite to 7 GPa determined from single-crystal X-ray diffraction

Content Provider	Springer Nature Link
Author	Zhao, J. Ross, N. L. Angel, R. J.
Copyright Year	2004
Abstract	The structural changes of CaSnO3, a GdFeO3-type perovskite, have been investigated to 7 GPa in a diamond-anvil cell at room temperature using single-crystal X-ray diffraction. Significant changes are observed in both the octahedral Sn–O bond lengths and tilt angles between the SnO6 octahedra. The octahedral (SnO6) site shows anisotropic compression and consequently the distortion of SnO6 increases with pressure. Increased pressure also results in a decrease of both of the inter-octahedral angles, ∠Sn–O1–Sn and ∠Sn–O2–Sn, indicating that octahedral tilting increases with increasing pressure, chiefly equivalent to rotation of the SnO6 octahedra about the pseudocubic <001> p axis. The distortion in the CaO12 and SnO6 sites, along with the octahedral SnO6 tilting, is attributed to the SnO6 site being less compressible than the CaO12 site.
Starting Page	299
Ending Page	305
Page Count	7
File Format	PDF
ISSN	03421791
Journal	Physics and Chemistry of Minerals
Volume Number	31
Issue Number	5
e-ISSN	14322021
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Perovskite X-ray diffraction Crystal structure High pressure
Content Type	Text
Resource Type	Article
Subject	Geochemistry and Petrology Materials Science

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Tilting and distortion of CaSnO3 perovskite to 7 GPa determined from single-crystal X-ray diffraction