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Author Kusano, Y. ♦ Saito, H. ♦ Ohta, E. ♦ Itoh, K. M. ♦ Vlasenko, L. S. ♦ Vlasenko, M. P.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ A CENTERS ♦ ANNEALING ♦ CRYSTALS ♦ ELECTRON SPIN RESONANCE ♦ IRRADIATION ♦ OXYGEN ♦ OXYGEN COMPLEXES ♦ SILICON ♦ SPACE DEPENDENCE ♦ SPECTRA ♦ SPIN ♦ SYMMETRY ♦ TEMPERATURE RANGE 0400-1000 K ♦ TENSORS ♦ TRIPLETS
Abstract Two new electron paramagnetic resonance (EPR) spectra, labeled KU2 and KU3, emerge as a result of annealing of γ-ray irradiated silicon crystals in the temperature range 360–560 °C. The EPR intensities of KU2 and KU3 increase in the upper range of the annealing temperature where the EPR peaks of the vacancy-oxygen complex (A-center) diminish. The angular dependence study shows that the EPR spectra of KU2 and KU3 resemble that of SL1, the excited triplet (spin S = 1) state of A-centers, but with slightly different g and D-tensors representing lowering in symmetries. Microscopic lattice distortions caused by capturing of extra interstitial oxygen atoms by the A-centers are proposed to be the source of lowering of the symmetries associated with KU2 and KU3.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-12-28
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 118
Issue Number 24


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