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Title: Angular correlation of annihilation radiation associated with vacancy defects in electron-irradiated 6H-SiC

Abstract

Electron-positron momentum distributions associated with vacancy defects in 6H-SiC after irradiation with 2-MeV electrons and annealing at 1000 deg. C have been studied using angular correlation of annihilation radiation measurements. It was confirmed that the above vacancy defects have dangling bonds along the c axis and the rotational symmetry around it. The first-principles calculation suggested that the vacancy defects are attributable to either carbon-vacancy-carbon-antisite complexes or silicon-vacancy-nitrogen pairs, while isolated carbon vacancies, silicon vacancies, and nearest neighbor divacancies are ruled out.

Authors:
; ;  [1]
  1. Advanced Science Research Center, Japan Atomic Energy Research Institute, 1233, Watanuki, Takasaki, Gunma, 370-1292 (Japan)
Publication Date:
OSTI Identifier:
20719011
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 71; Journal Issue: 19; Other Information: DOI: 10.1103/PhysRevB.71.193204; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANGULAR CORRELATION; ANNEALING; ANNIHILATION; CARBON; ELECTRONS; HYDROGEN 6; IRRADIATION; MEV RANGE; NITROGEN; PHYSICAL RADIATION EFFECTS; POSITRONS; SEMICONDUCTOR MATERIALS; SILICON; SILICON CARBIDES; VACANCIES

Citation Formats

Kawasuso, A, Chiba, T, Higuchi, T, National Institute for Materials Science, Namiki, 1-1, Tsukuba, 305-0044, and Mizuho Information and Research Institute, 2-3, Kanda, Nishikicho, Chiyoda-ku, Tokyo, 101-8843. Angular correlation of annihilation radiation associated with vacancy defects in electron-irradiated 6H-SiC. United States: N. p., 2005. Web. doi:10.1103/PhysRevB.71.193204.
Kawasuso, A, Chiba, T, Higuchi, T, National Institute for Materials Science, Namiki, 1-1, Tsukuba, 305-0044, & Mizuho Information and Research Institute, 2-3, Kanda, Nishikicho, Chiyoda-ku, Tokyo, 101-8843. Angular correlation of annihilation radiation associated with vacancy defects in electron-irradiated 6H-SiC. United States. https://doi.org/10.1103/PhysRevB.71.193204
Kawasuso, A, Chiba, T, Higuchi, T, National Institute for Materials Science, Namiki, 1-1, Tsukuba, 305-0044, and Mizuho Information and Research Institute, 2-3, Kanda, Nishikicho, Chiyoda-ku, Tokyo, 101-8843. 2005. "Angular correlation of annihilation radiation associated with vacancy defects in electron-irradiated 6H-SiC". United States. https://doi.org/10.1103/PhysRevB.71.193204.
@article{osti_20719011,
title = {Angular correlation of annihilation radiation associated with vacancy defects in electron-irradiated 6H-SiC},
author = {Kawasuso, A and Chiba, T and Higuchi, T and National Institute for Materials Science, Namiki, 1-1, Tsukuba, 305-0044 and Mizuho Information and Research Institute, 2-3, Kanda, Nishikicho, Chiyoda-ku, Tokyo, 101-8843},
abstractNote = {Electron-positron momentum distributions associated with vacancy defects in 6H-SiC after irradiation with 2-MeV electrons and annealing at 1000 deg. C have been studied using angular correlation of annihilation radiation measurements. It was confirmed that the above vacancy defects have dangling bonds along the c axis and the rotational symmetry around it. The first-principles calculation suggested that the vacancy defects are attributable to either carbon-vacancy-carbon-antisite complexes or silicon-vacancy-nitrogen pairs, while isolated carbon vacancies, silicon vacancies, and nearest neighbor divacancies are ruled out.},
doi = {10.1103/PhysRevB.71.193204},
url = {https://www.osti.gov/biblio/20719011}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 19,
volume = 71,
place = {United States},
year = {Sun May 15 00:00:00 EDT 2005},
month = {Sun May 15 00:00:00 EDT 2005}
}