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Glow curves of flux‐grown NaMgF 3 crystals
Author(s) -
Reddy B. Kantha,
Somaiah K.,
Babu V. Hari
Publication year - 1983
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.2170181130
Subject(s) - annealing (glass) , impurity , flux (metallurgy) , analytical chemistry (journal) , absorption (acoustics) , absorption spectroscopy , spectral line , irradiation , materials science , chemistry , optics , physics , organic chemistry , chromatography , astronomy , nuclear physics , metallurgy , composite material
Glow curves and optical absorption spectra of X‐irradiated flux grown crystals are studied. Two glow peaks at 370, 585 K and three shoulders at 420, 540 and 610 K are obtained. Optical absorption studies reveal two absorption bands at 405 and 475 nm and a well defined peak at 295 nm. Room temperature annealing and bleaching studies have suggested that the glow peaks at 370 and 585 K may correspond to impurities and F‐centers of 295 nm band respectively. The other shoulders at 420, 540 and 610 K are attributed to other F‐aggregate centers. The glow peaks are analysed using first order kinetics.