Dislocation analysis for heat-exchanger method grown sapphire with white beam synchrotron X-ray topography

Dislocations in high quality Heat-Exchanger Method (HEM) produced sapphire were analyzed with the white beam large area transmission synchrotron X-ray topography technique. After analysis the dislocations for different Laue spots, i.e. different diffraction vectors, in one recorded film, three kinds...

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Veröffentlicht in:Journal of crystal growth 2003-05, Vol.252 (1), p.113-119
Hauptverfasser: Chen, W.M., McNally, P.J., Shvyd’ko, Yu.V., Tuomi, T., Danilewsky, A.N., Lerche, M.
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container_end_page 119
container_issue 1
container_start_page 113
container_title Journal of crystal growth
container_volume 252
creator Chen, W.M.
McNally, P.J.
Shvyd’ko, Yu.V.
Tuomi, T.
Danilewsky, A.N.
Lerche, M.
description Dislocations in high quality Heat-Exchanger Method (HEM) produced sapphire were analyzed with the white beam large area transmission synchrotron X-ray topography technique. After analysis the dislocations for different Laue spots, i.e. different diffraction vectors, in one recorded film, three kinds of dislocations, i.e. screw, edge and mixed dislocations were identified in the studied HEM sapphire, but most are mixed type, whose Burgers vectors belong to the two groups of 〈2 1 ̄ 1 ̄ 0〉 and 〈1 0 1 ̄ 0〉 .
doi_str_mv 10.1016/S0022-0248(03)00884-4
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After analysis the dislocations for different Laue spots, i.e. different diffraction vectors, in one recorded film, three kinds of dislocations, i.e. screw, edge and mixed dislocations were identified in the studied HEM sapphire, but most are mixed type, whose Burgers vectors belong to the two groups of 〈2 1 ̄ 1 ̄ 0〉 and 〈1 0 1 ̄ 0〉 .</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/S0022-0248(03)00884-4</doi><tpages>7</tpages></addata></record>
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subjects A1. Burgers vector
A1. Dislocation
A1. X-ray topography
A2. Heat-exchanger method
B1. Sapphire
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Defects and impurities in crystals
microstructure
Exact sciences and technology
Growth from melts
zone melting and refining
Linear defects: dislocations, disclinations
Materials science
Methods of crystal growth
physics of crystal growth
Physics
Structure of solids and liquids
crystallography
title Dislocation analysis for heat-exchanger method grown sapphire with white beam synchrotron X-ray topography
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