Orientation domains in a monoclinic Mg–Al–O phase. Issue 3 (25th May 2018)

• Record Type: Journal Article
• Authors: Wen, Guangyu; Zheng, He; Wang, Kai; Cao, Fan; Zhao, Ligong; Li, Lei; Wang, Jianbo; Jia, Shuangfeng
• Is Part Of: Journal of applied crystallography. Volume 51:Issue 3(2018)
• Page Start: 802
• Page End: 808
• Publication Date: 2018-05-25
• Subjects: orientation domains -- structural relationships -- transmission electron microscopy; Crystallography -- Periodicals; 548.05
• DOI: 10.1107/S1600576718005344
• Languages: English
• ISSNs: 0021-8898

Abstract

Abstract : MgAl x O y nanocrystals with unreported monoclinic structures have been successfully synthesized under high temperature. The introduction of domain boundaries may greatly increase the strength of low‐dimensional MgAl x O y . Abstract : 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 MgAl2 O4 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.