PMID: 11328098May 1, 2001Paper

Observation of cation reordering during the olivine-spinel transition in fayalite by in situ synchrotron X-ray diffraction at high pressure and temperature

Physical Review Letters
Jiuhua ChenP Raterron

Abstract

The olivine-spinel phase transition in fayalite at high pressure and temperature has been studied using time-resolved x-ray diffraction. Structure refinements show a delay of cation reordering relative to anions during the phase transformation and an increase in the cell volume while the cations reorder into their sites. A significant stress drop in the sample is observed. This experiment, for the first time, quantitatively demonstrates a pseudomartensitic transformation: a diffusionless anion sublattice transition coupled with short-range diffusional cation reordering.

References

Jan 24, 1997·Science·Y WangR C Liebermann

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Citations

Jun 28, 2016·Physical Chemistry Chemical Physics : PCCP·Sheng-Cai ZhuZhi-Pan Liu
Dec 14, 2019·Nature Communications·Christopher LangrandSébastien Merkel
Dec 3, 2013·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Arya PaulMadan Rao
Apr 4, 2002·Journal of the American Chemical Society·Adam F GrossSarah H Tolbert

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