Improved Surface Crystallinity of MgO Crystal Substrate through Annealing in Oxygen Atmosphere
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概要
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The oxygen annealing (OA) effects on MgO substrates commercially available were closely investigated. The smeared low-energy electron diffraction spot pattern and transmissionlike spot pattern of reflection high-energy electron diffraction were dramatically changed to those of almost ideal MgO crystals through OA at 1000℃. After OA, the spotty cathodeluminescence (CL) pattern disappeared almost completely, and the peak wave-length of CL spectra shifted from blue (∼400 nm) to red (∼715 nm). The 5-nm-thick epitaxial YBaCuO films grown on (100)MgO substrates with OA exhibited good superconductivity. Othrewise, superconductivity was not evident. However, the macroscopic subgrain structure seen in the X-ray topographs showed no meaningful changes between before and after OA.
- 社団法人応用物理学会の論文
- 1992-05-15
著者
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KOBAYASHI Takeshi
Faculty of Engineering Science, Osaka University
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Sakuta Ken
Graduate School Of Engineering Science Osaka University
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Sakuta Ken
Faculty Of Engineering Science Osaka University
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AWAJI Takahiro
Department of Electrical Engineering, Faculty of Engineering Science, Osaka University
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Awaji Takahiro
Department Of Electrical Engineering Faculty Of Engineering Science Osaka University
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SAKAGUCHI Yoshiyuki
Faculty of Engineering Science, Osaka University
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AWAJI Takahiro
Faculty of Engineering Science, Osaka University
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Sakaguchi Y
Graduate School Of Information Systems The University Of Electro-communications
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Sakaguchi Yoshiyuki
Faculty Of Engineering Science Osaka University
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Kobayashi Takeshi
Faculty Of Engineering Science Department Of Electrical Engineering Osaka University
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