New Vacancy Source in Ultrahigh-Purity Aluminum Single Crystals with a Low Dislocation Density (Condensed Matter : Structure, Mechanical and Thermal Properties)

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概要

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• The vacancy generation process in ultrahigh-purity aluminum single crystals with a low dislocation density was investigated by synchrotron radiation topography using a white X-ray beam. Some straight lines were observed in the topographs taken after temperature rose to 300℃ from room temperature, and they were confirmed to be rows of successive small interstitial-type dislocation loops grown as vacancy sources. It was concluded that the thermal generation mechanism of vacancies in ultrahigh-purity aluminum single crystals with a low dislocation density consists of the following two steps. First, small interstitial loops are heterogeneously formed in the crystal lattice ; second, these convert to lengthened loops with the development of screw components and finally grow into rows of dislocation loops emitting vacancies into the lattice.

• 社団法人日本物理学会の論文
• 2004-05-15

著者

• YAMAMOTO Satoshi

  Department of Physiology, Kurume University School of Medicine

• MIZUNO Kiyoshi

  Department of physics,Tokyo Metropolitan University

• MIZUNO Kaoru

  Department of Physics, University of Durham, Science Laboratories, South Road

• Mizuno K

  Defence Evaluation And Res. Agency Malvern Worcestershire Gbr

• Mizuno K

  Department Of Material Science Faculty Of Science And Engineering Shimane University

• Mizuno Kaoru

  Department Of Physics Shimane University

• HASHIMOTO Eiji

  Hiroshima Synchrotron Radiation Center, Hiroshima University

• Mizuno Kiyoshi

  Faculty Of Integrated Arts And Science Tokushima University

• Yamamoto Satoshi

  Department Of Cardiovascular And Respiratory Medicine Shiga University Of Medical Science

• MORIKAWA Kimihiko

  Institute of Low Temperature Science, Hokkaido University

• KUGA Masanori

  Department of Physics, Faculty of Science, Kanazawa University

• OKAMOTO Hiroyuki

  School of Health Sciences, Faculty of Medicine, Kanazawa University

• Hashimoto Eiji

  Hiroshima Synchrotron Radiation Center Hiroshima University

• Mizuno Kaoru

  Department Of Material Science Faculty Of Science And Engineering Shimane University

• Kuga Masanori

  Department Of Physics Faculty Of Science Kanazawa University

• Yamamoto Satoshi

  Department Of Material Science Faculty Of Science And Engineering Shimane University

• Yamamoto Satoshi

  Department Of Biochemistry Nagoya University School Of Medicine

• Okamoto Hiroyuki

  School Of Health Sciences Faculty Of Medicine Kanazawa University

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