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Figure 7
x coordinate of O1B (white triangles) and O3B (black squares) versus pressure for Mg2Si2O6 (samples 17–25 of Table 1[link]). The x coordinates at 7.0 GPa significantly differ from the general trend, showing that the sample measured at that pressure had probably not reached the equilibrium, but was still keeping a memory of the room-pressure structure.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 55| Part 6| December 1999| Pages 902-916
https://doi.org/10.1107/S0108768199008708
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