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arXiv · 1402.2200

Structural study of alfa-Bi2O3 under pressure

A. L. J. Pereira·D. Errandonea·A. Beltrán·L. Gracia·O. Gomis·J. A. Sans·B. Garcia-Domene·A. Miquel-Veyrat·F. J. Manjón·A. Muñoz·C. Popescu
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Abstract

An experimental and theoretical study of the structural properties of monoclinic bismuth oxide (alfa-Bi2O3) under high pressures is here reported. Both synthetic and mineral bismite powder samples have been compressed up to 45 GPa and their equations of state have been determined with angle-dispersive x-ray diffraction measurements. Experimental results have been also compared to theoretical calculations which suggest the possibility of several phase transitions below 10 GPa. However, experiments reveal only a pressure-induced amorphisation between 15 and 25 GPa, depending on sample quality and deviatoric stresses. The amorphous phase has been followed up to 45 GPa and its nature discussed.

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A. L. J. Pereira, D. Errandonea, A. Beltrán, L. Gracia, O. Gomis, J. A. Sans, B. Garcia-Domene, A. Miquel-Veyrat, F. J. Manjón, A. Muñoz, C. Popescu. 2014-02-10. Structural study of alfa-Bi2O3 under pressure. https://doi.org/10.1088/0953-8984%2F25%2F47%2F475402

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