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Your search keyword '"Yoneyama, Akio"' showing total 10 results
Start Over Author "Yoneyama, Akio" Journal japanese journal of applied physics
10 results on '"Yoneyama, Akio"'

2. Analysis of the inclined structure of threading screw dislocation in SiC using deep X-ray topography

Author

Ishiji, Kotaro, Yoneyama, Akio, and Kamata, Isaho

Abstract

The inclined structures of threading screw dislocations (TSDs) in silicon carbide (SiC) were analyzed to observe dislocations located deep inside a crystal using X-ray topography (deep XRT). In the deep XRT of a 00012 diffraction, the strain fields of TSD core-lines from the sample surface to a depth of 90 μm were projected on a detector. We propose a method for analyzing the inclined structure of a real TSD from a TSD projected onto a detector. The inclined direction and angle of the real TSD were estimated by correcting the terminal coordinate of the projected TSD core-line. Furthermore, the mixed components of the Burgers vector of TSDs were verified using a discriminant method based on 〈112¯8〉 grazing-incidence X-ray topography. Each inclined direction index was close to the mixed components in the observed TSDs, supporting the correspondence between the two.

Published
2024
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