Abstract
Measurements of the absorption and dielectric losses on KCl crystals with high concentration of copper were performed at room and liquid nitrogen temperature. The exciton bands at 383 nm and 375 nm were found as in the case of similar NaCl-Cu samples. After the annealing the bands disappeared, the bands at 226 and 330 nm decreased and the tanδ-peak at 50 ‡C increased. The interpretation is given on the basis of the existence of Cu-ion agglomerates and their disintegration in octohedral chlorocopper complexes after annealing.
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The authors wish to express their appreciation to their co-workers K. DoleŽalová and J. Matoušová for careful execution of the experiments.
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Bohun, A., Kaderka, M. The physical behaviour of copper in KCl crystal. Czech J Phys 19, 1180–1183 (1969). https://doi.org/10.1007/BF01691764
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DOI: https://doi.org/10.1007/BF01691764