AI Article Synopsis
- The study examines the structural properties of monoclinic bismuth oxide (α-Bi2O3) under high-pressure conditions, using both experimental and theoretical approaches.
- Samples of synthetic and mineral bismite were compressed to 45 GPa, with their equations of state assessed using angle-dispersive x-ray diffraction.
- While theoretical predictions suggested possible phase transitions below 10 GPa, the experiments primarily showed that the material transformed into an amorphous state between 15 and 25 GPa, influenced by sample quality and stresses.
Article Abstract
An experimental and theoretical study of the structural properties of monoclinic bismuth oxide (α-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 with theoretical calculations which suggest the possibility of several phase transitions below 10 GPa. However, experiments reveal only a pressure-induced amorphization 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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| http://dx.doi.org/10.1088/0953-8984/25/47/475402 | DOI Listing |
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