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Orientation domains in a monoclinic Mg–Al–O phase
Author(s) -
Wen Guangyu,
Zheng He,
Wang Kai,
Cao Fan,
Zhao Ligong,
Li Lei,
Wang Jianbo,
Jia Shuangfeng
Publication year - 2018
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/s1600576718005344
Subject(s) - monoclinic crystal system , transmission electron microscopy , crystallography , materials science , phase (matter) , nanowire , epitaxy , crystal structure , chemistry , nanotechnology , organic chemistry , layer (electronics)
Two types of Mg–Al–O structures were successfully synthesized under high temperature (above 1173 K). Transmission electron microscopy and group theory analysis reveal the existence of cubic MgAl 2 O 4 and an unreported monoclinic MgAl x O y phase with four domain variants. The structural relationship between these two phases is discussed in detail. The results shed light on the structural investigation of Mg–Al–O oxides, which are important mineral components of the Earth's lower mantle as well as substrates for the epitaxial growth of semiconductor films. Monoclinic MgAl x O y nanowires with domain boundaries may also provide a possible high‐strength candidate for industrial applications.