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Thermal evolution of the metastable r8 and bc8 polymorphs of silicon

Haberl, Bianca; Guthrie, Malcolm; Sinogeikin, Stanislav V.; Shen, Guoyin; Williams, James; Bradby, Jodie


The kinetics of two metastable polymorphs of silicon under thermal annealing was investigated. These phases with body-centered cubic bc8 and rhombohedral r8 structures can be formed upon pressure release from metallic silicon. In this study, these metastable polymorphs were formed by two different methods, via point loading and in a diamond anvil cell (DAC). Upon thermal annealing different transition pathways were detected. In the point loading case, the previously reported Si-XIII formed and...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: High Pressure Research
DOI: 10.1080/08957959.2014.1003555


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