论文信息 - EPR and optical absorption of manganese doped BaF2 and SrF2

EPR and optical absorption of manganese doped BaF2 and SrF2

Abstract Mn+ ions in off-centre position along [100] have been produced in BaF2:Mn by X-irradiation at LNT. Their EPR spectra are characterized by g-2. 0107. D = 265.8·10−4cm−1. A = 122.9·10−4cm−11 and a superhyperfine structure arising from 8 surrounding F− nuclei. In the optical absorption spectrum they show up by a band at 411 nm. This behaviour is compared with the results found for SrF2:Mn. After X-irradiation at room temperature beside a different Mn+ centre two species of Mn0 appear in non-cubic position. Both interact dominantly with two F− neighbours. Possible models for these species are discussed.

A. Scharmann | A. Hofstaetter | P. Baranov | F. Schön | T. Nickel

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