Abstract
Paramagnetic nitrogen centers are produced in nitrate doped single crystals of KCl, KBr, KJ, and NaCl by introduction of F-centers. The electron spin resonance is studied at low temperature. The hyperfine structure of the lines is caused by interaction with two N14 nuclei. The angle dependence of the resonance spectra is measured by rotating the crystals about several crystallographic axes. The results can be fitted to a spin-Hamiltonian with orthorhombic symmetry. The components of theg-tensor and theA-tensor are determined. The centers are believed to be N −2 -ions in negative ion vacancies.
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Wir danken Herrn Dr. H.Gründig für die Herstellung einiger der verwendeten Kristalle. Der Deutschen Forschungsgemeinschaft, der Fraunhofer-Gesellschaft und der Akademie der Wissenschaften zu Göttingen ist für die Bereitstellung von Apparaten zu danken.
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Hausmann, A., Hilsch, R. & Sander, W. Elektronenspin-Resonanz von Stickstoffzentren in Alkalihalogenid-Kristallen. Z. Physik 179, 461–467 (1964). https://doi.org/10.1007/BF01380818
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DOI: https://doi.org/10.1007/BF01380818