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Branching and twinning in α‐cristobalite dendrites: an electron backscatter diffraction study
Author(s) -
Zhao Shanrong,
Yang Mingling,
Xu Haijun,
Zhang Suxin
Publication year - 2008
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s002188980801635x
Subject(s) - crystal twinning , electron backscatter diffraction , cristobalite , crystallography , materials science , electron diffraction , bar (unit) , diffraction , dendrite (mathematics) , geometry , optics , geology , chemistry , microstructure , physics , composite material , mathematics , quartz , oceanography
In this paper, the electron backscatter diffraction (EBSD) technique is used to determine the orientations of α‐cristobalite dendrites. The two branches of the cross‐shaped α‐cristobalite dendrite extend along the crystallographic directions [100] and [010], but no branches develop along 〈001〉. A new kind of twinning relationship is found between two α‐cristobalite dendrites. The twin axes are [110], [111] and [1], and the twin planes are (111) and (1). It is shown that crystallographic symmetry controls the dendrite morphology and dendrite aggregation.