Coexistence of two different atomic structures in the Σ13 pyramidal twin boundary in α-Al2O3
Source abstract
Abstract
An α-Al2O3 bicrystal with a (101¯4)/[12¯10] Σ13 grain boundary was fabricated by joining two pieces of single crystal at 1500°C in an Ar–H2 mixture gas. The resultant grain boundary was characterised by scanning transmission electron microscopy (STEM) at the atomic level. STEM observations revealed that the grain boundary consists of two regions with different atomic structures. These two structures were identified to be the most and second-most stable structures by theoretical calculations and STEM image simulation. The coexistence of two different structures in the Σ13 grain boundary is discussed.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Microstructure and mechanical properties · X-ray Diffraction in Crystallography · High-pressure geophysics and materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Engineering Innovation, School of Engineering, The University of Tokyo, Bunkyo, Tokyo, Japan
Japan Science and Technology Agency, Precursory Research for Embryonic Science and Technology, Kawaguchi, Saitama, Japan
Nanostructures Research Laboratory, Japan Fine Ceramic Center, Nagoya, Aichi, Japan
Center for Elements Strategy Initiative for Structure Materials, Kyoto University, Sakyo, Kyoto, Japan
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