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Optical Absorption Spectrum of Cu 2+ Ions in Lithium Sodium Potassium Sulphate Single Crystal
Author(s) -
Kumar R. Rama,
Reddy B. C. Venkata
Publication year - 1993
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170280421
Subject(s) - tetragonal crystal system , potassium , ion , lithium (medication) , absorption (acoustics) , absorption spectroscopy , chemistry , sodium , analytical chemistry (journal) , single crystal , lithium sulfate , copper , crystal (programming language) , inorganic chemistry , crystallography , materials science , crystal structure , ionic bonding , optics , physics , medicine , programming language , organic chemistry , chromatography , computer science , composite material , endocrinology
Single crystals of Copper‐doped Lithium sodium potassium sulphate were grown at room temperature. The optical absorption spectra were recorded at room and liquid‐nitrogen temperatures. The observed absorption bands have been attributed to an ion of Cu 2+ in tetragonal symmetry with 2 B 1 as the ground state. A successful interpretation of all the observed bands have been made by taking into consideration spin‐orbit coupling associated with a tetragonal field. The crystal field parameters derived are D q = 1045 cm −1 , D s = 1352 cm −1 and D t = 457 cm −1 .