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Recharging Processes of Chromium Ions in Cr:SrGdGa 3 O 7 and Cr:SrLaGa 3 O 7 Single Crystals
Author(s) -
Kaczmarek S. M.,
Berkowski M.,
Jablonski R.
Publication year - 1999
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/(sici)1521-4079(199909)34:8<1023::aid-crat1023>3.0.co;2-8
Subject(s) - valency , chromium , ion , annealing (glass) , electron paramagnetic resonance , doping , single crystal , analytical chemistry (journal) , materials science , crystal (programming language) , crystal growth , chemistry , crystallography , nuclear magnetic resonance , metallurgy , physics , optoelectronics , philosophy , linguistics , organic chemistry , chromatography , computer science , programming language
Growth and recharging processes of chromium ions in SrGdGa 3 O 7 and SrLaGa 3 O 7 single crystals incorporated during growth or doping by diffusion (only for SrLaGa 3 O 7 crystal) were analyzed. The annealing at 1000°C in air and ionizing with gamma rays (doses from 103 to 105 Gy) and protons (1014 cm ‐2 only for SrGdGa 3 O 7 crystal) were performed. Different kinds of chromium ions valency, from two to four, were found. Electron spin resonance measurements in the temperature range 5‐300K with the use of Brucker spectrometer were also done.