کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5400218 | 1505915 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparative crystal field study of Ni2+ energy levels and crystal field effects in CsCdBr3 and CsMgBr3 crystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Comparative crystal field study of Ni2+ energy levels and crystal field effects in CsCdBr3 and CsMgBr3 crystals Comparative crystal field study of Ni2+ energy levels and crystal field effects in CsCdBr3 and CsMgBr3 crystals](/preview/png/5400218.png)
چکیده انگلیسی
The exchange charge model of crystal field theory has been used to analyze the ground state absorption of Ni2+ ions in CsCdBr3 and CsMgBr3 crystals. The parameters of crystal field were calculated from the available crystal structure data. The obtained Ni2+ energy level schemes were compared with the experimental absorption spectra; good agreement between the calculated and experimental data was demonstrated. Dependencies of the crystal field strength 10Dq on the “impurity ion-ligand” distance of the nearest Brâ ions from Ni2+ ions were derived for both crystals and used to estimate the Stokes shift values for these crystals; all calculated results are close to the experimental data. The “critical” Ni-Br distances leading to the Ni2+ energy levels crossing were estimated; these results can be used for the analysis of the external hydrostatic pressure effects on the optical properties of the studied crystals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 145, January 2014, Pages 563-568
Journal: Journal of Luminescence - Volume 145, January 2014, Pages 563-568
نویسندگان
M.G. Brik, A.A. Chaykin,