title: Mutual transformation between crystalline phases in silicon after treatment in a planetary mill: HRTEM studies.
abstract: 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.
authors.affiliation: Technological Institute for Superhard and Novel Carbon Materials, Centralnaya 7a, Troitsk, Moscow 142190, Russian Federation.
authors.forename: Boris
authors.initials: B
authors.lastname: Kulnitskiy
authors.affiliation: Technological Institute for Superhard and Novel Carbon Materials, Centralnaya 7a, Troitsk, Moscow 142190, Russian Federation.
authors.forename: Mikhail
authors.initials: M
authors.lastname: Annenkov
authors.affiliation: Technological Institute for Superhard and Novel Carbon Materials, Centralnaya 7a, Troitsk, Moscow 142190, Russian Federation.
authors.forename: Igor
authors.initials: I
authors.lastname: Perezhogin
authors.affiliation: Technological Institute for Superhard and Novel Carbon Materials, Centralnaya 7a, Troitsk, Moscow 142190, Russian Federation.
authors.forename: Mikhail
authors.initials: M
authors.lastname: Popov
authors.affiliation: Technological Institute for Superhard and Novel Carbon Materials, Centralnaya 7a, Troitsk, Moscow 142190, Russian Federation.
authors.forename: Danila
authors.initials: D
authors.lastname: Ovsyannikov
authors.affiliation: Technological Institute for Superhard and Novel Carbon Materials, Centralnaya 7a, Troitsk, Moscow 142190, Russian Federation.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Blank
keywords: TEM; orientation relationship; phase transformations; planetary mill; silicon