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Four new optically detected magnetic resonances are observed in photoluminescence bands at {~} 0.85 and {~}0.93 eV, which are produced in epitaxial wurtzite films of GaN by 2.5-MeV electron irradiation. One of these reveals a resolved hyperfine interaction with a single Ga nucleus, indicating a displaced Ga atom of some kind. It is tentatively identified as a complex involving interstitial Gaᵢ²⁺.
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Linde et al. (1997) studied this question.
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