Recharging processes of chromium ions in Cr : SrGdGa3O7 and Cr : SrLaGa3O7single crystals

Authors
Kaczmarek, SM Berkowski, M Jablonski, R
Citation
Sm. Kaczmarek et al., Recharging processes of chromium ions in Cr : SrGdGa3O7 and Cr : SrLaGa3O7single crystals, CRYST RES T, 34(8), 1999, pp. 1023-1029
Citations number
8
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CRYSTAL RESEARCH AND TECHNOLOGY
ISSN journal
02321300 → ACNP
Volume
34
Issue
8
Year of publication
1999
Pages
1023 - 1029
Database
ISI
SICI code
0232-1300(1999)34:8<1023:RPOCII>2.0.ZU;2-3
Abstract
Growth and recharging processes of chromium ions in SrGdGa3O7 and SrLaGa3O7 single crystals incorporated during growth or doping by diffusion (only fo r SrLaGa3O7 crystal) were analyzed. The annealing at 1000 degrees C in air and ionizing with gamma rays (doses from 10(3) to 10(5) Gy) and protons (10 (14) cm(-2) only for SrGdGa3O7 crystal) were performed. Different kinds of chromium ions valency, from two to four, were found. Electron spin resonanc e measurements in the temperature range 5-300K with the use of Brucker spec trometer were also done.