کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1518833 1511626 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nephelauxetic effect for the isoelectronic 3d3-ions (Cr3+, Mn4+, Fe5+) in SrTiO3
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Nephelauxetic effect for the isoelectronic 3d3-ions (Cr3+, Mn4+, Fe5+) in SrTiO3
چکیده انگلیسی
The exchange charge model of crystal field theory has been used to analyze systematically the ground state absorption spectra of isoelectronic Cr3+, Mn4+, and Fe5+ ions in an octahedral coordination in the SrTiO3 crystal. The parameters of the crystal field acting on the valence electrons of impurity ions are calculated from the available crystal structure data. A special attention is paid to the analysis of dependencies of the crystal field invariants and covalence effects on the impurity ion. It is shown numerically that the covalence effects between the above impurity ions and ligands increase with an increase of the 3d-ion oxidation state.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 67, Issue 7, July 2006, Pages 1599-1604
نویسندگان
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