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EnglishSingle crystals of Sr5(PO4)3Cl doped with Mn(V) ion were prepd. by the std. flux-growth technique. The polarized electronic spectrum (8000-44,000 cm-1) of MnO43- in Sr5(PO4)3Cl was measured at 4.2 K. By means of a careful examn. of the possible excited states and of the site-symmetry of the Mn(V) ion, the bands in the region 8000-23,000 cm-1 are assigned as ligand-field transitions and the others at higher energy, which are more intense, as charge-transfer transitions. These assignments are based on the obsd. polarizations of the bands and on their oscillator strengths.
Crystal growth of strontium chloroapatite (Sr5(PO4)3Cl) doped with manganese(V) and study of the absorption spectrum / R. Borromei; E. Fisicaro. - In: GAZZETTA CHIMICA ITALIANA. - ISSN 0016-5603. - 109(1979), pp. 191-194.
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