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Mutual transformation between crystalline phases in silicon after treatment in a planetary mill: HRTEM studies
Author(s) -
Kulnitskiy Boris,
Annenkov Mikhail,
Perezhogin Igor,
Popov Mikhail,
Ovsyannikov Danila,
Blank Vladimir
Publication year - 2016
Publication title -
acta crystallographica section b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.604
H-Index - 33
ISSN - 2052-5206
DOI - 10.1107/s2052520616011422
Subject(s) - high resolution transmission electron microscopy , silicon , transmission electron microscopy , ball mill , materials science , phase (matter) , stacking , crystallography , mineralogy , nanotechnology , chemistry , metallurgy , organic chemistry
High‐resolution transmission electron microscopy (HRTEM) studies of silicon after treatment in a planetary mill have been performed. It is shown that along with the initial phase of silicon, Si‐I, the sample also contains some high‐pressure phases: Si‐III (Kasper phase) and Si‐IV (lonsdaleite). We studied the orientation relationship between the particles of different phases, finding that there are, in general, two mechanisms of formation of Si‐IV: (1) through the stacking faults formation; (2) through the transformation first to the Kasper phase (Si‐III), and then from the Kasper phase to Si‐IV. Estimations of temperature and pressure conditions in the planetary ball mill made previously are in accordance with the conditions of formation of the above‐mentioned phases.