کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1831448 | 1526497 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
XAFS and neutron diffraction study of La1−xSrxCo1−yNbyO3
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effect of hole doping on the crystal and electronic structure of La1−xSrxCo1−yNbyO3 (y=0.0–0.25) at the x=0.0; 0.2; 0.5 has been studied by neutron diffraction and X-ray absorption spectroscopy at the Co K and L2,3-edges. The preliminary analysis of the Co K and L2,3-edges X-ray absorption near edge structure (XANES) in La1−xSrxCo1−yNbyO3 series suggests that upon niobium doping, an increase of the intermediate Co3+ spin state and a decrease of low spin Co4+ states contributions occur. The possible explanation of the observed changes of crystal and electronic structure in these cobaltites is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 575, Issues 1–2, 21 May 2007, Pages 176–179
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 575, Issues 1–2, 21 May 2007, Pages 176–179
نویسندگان
V.V. Efimov, E. Efimova, D. Karpinsky, D.I. Kochubey, V. Kriventsov, A. Kuzmin, S. Molodtsov, V. Sikolenko, J. Purans, S. Tiutiunnikov, I.O. Troyanchuk, A.N. Shmakov, D. Vyalikh,