Extension of High‐Resolution Optical Absorption Spectroscopy to Divalent Neodymium: Absorption Spectra of Nd2+ Ions in a SrCl2 Host. Issue 36 (4th August 2017)

• Record Type: Journal Article
• Authors: Karbowiak, Mirosław; Rudowicz, Czesław; Cichos, Jakub
• Is Part Of: Angewandte Chemie international edition. Volume 56:Issue 36(2017)
• Page Start: 10721
• Page End: 10724
• Publication Date: 2017-08-04
• Subjects: absorption spectroscopy -- f-d transitions -- neodymium -- strontium; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201704559
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: There is a lack of information on electronic spectra of divalent neodymium, and thus the synthesis and characterization of Nd 2+ systems is now reported. Stabilization of neodymium is observed in a chloride host, which importantly has been accomplished with Nd ions introduced in a divalent state during synthesis, unlike by γ‐irradiation of Nd 3+ system employed previously. This method yields good‐quality SrCl2 :Nd 2+ single crystals. For the first time the electronic absorption spectra of Nd 2+ doped in SrCl2 have been recorded with high resolution at liquid helium temperature (4.2 K). Identification of the absorption bands occurring in the spectral range of 5000–40 000 cm −1 (2000–250 nm) has been achieved and their tentative assignment proposed. This uniquely detailed Nd 2+ absorption spectrum provides basis for fingerprinting method enabling identification of the presence of Nd 2+ ions in future spectra as well as in existing but as‐yet not fully resolved spectra. Abstract : The electronic absorption spectra of Nd 2+ doped in SrCl2 have been recorded with high resolution at liquid helium temperature (4.2 K; black spectrum; blue=SrCl2 :Nd 3+ for comparison). Identification of the absorption bands occurring in the range of 5000–40 000 cm −1 (2000–250 nm) has been achieved and tentative assignment is proposed.