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Electron paramagnetic resonance and optical absorption spectra of Gd 3+ ions in alkali cadmium borosulphate glasses
Author(s) -
Rao A. S.,
Rao J. L.,
Kumar V. V. R. K.,
Jayasankar C. K.,
Lakshman S. V. J.
Publication year - 1992
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221740118
Subject(s) - electron paramagnetic resonance , cadmium , paramagnetism , ion , alkali metal , spectral line , absorption spectroscopy , cadmium oxide , analytical chemistry (journal) , absorption (acoustics) , doping , fluoride , crystal (programming language) , materials science , resonance (particle physics) , chemistry , inorganic chemistry , nuclear magnetic resonance , atomic physics , condensed matter physics , physics , optics , optoelectronics , organic chemistry , chromatography , astronomy , computer science , composite material , programming language , metallurgy
Electron paramagnetic resonance (EPR) at 9.205 GHz is examined for a series of Gd 3+ ‐doped alkali cadmium borosulphate (R 2 SO 4 · CdSO 4 · B 2 O 3 ; R = Li, Na, K or Cs) glasses. The spectra are similar to the U‐spectra familiar in many oxide, fluoride, and sulphate glasses, indicating very low and disordered site symmetries with a broad distribution of crystal fields. Remarkable changes are observed in the spectrum with changes in temperature, glass composition, and concentration of Gd 3+ ions. Optical absorption spectra of Gd 3+ ‐doped cadmium borosulphate glass are also studied at 300 K.
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