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Extension of High‐Resolution Optical Absorption Spectroscopy to Divalent Neodymium: Absorption Spectra of Nd 2+ Ions in a SrCl 2 Host
Author(s) -
Karbowiak Mirosław,
Rudowicz Czesław,
Cichos Jakub
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201704559
Subject(s) - neodymium , absorption spectroscopy , ion , spectral line , chemistry , spectroscopy , absorption (acoustics) , divalent , analytical chemistry (journal) , materials science , laser , optics , physics , organic chemistry , chromatography , quantum mechanics , astronomy , composite material
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 SrCl 2 :Nd 2+ single crystals. For the first time the electronic absorption spectra of Nd 2+ doped in SrCl 2 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.