Title of article
XAFS and neutron diffraction study of La1−xSrxCo1−yNbyO3
Author/Authors
Efimov، نويسنده , , V.V. and Efimova، نويسنده , , E. and Karpinsky، نويسنده , , D. and Kochubey، نويسنده , , D.I. and Kriventsov، نويسنده , , V. and Kuzmin، نويسنده , , A. and Molodtsov، نويسنده , , S. and Sikolenko، نويسنده , , V. and Purans، نويسنده , , J. and Tiutiunnikov، نويسنده , , S. and Troyanchuk، نويسنده , , I.O. and Shmakov، نويسنده , , A.N. and Vyalikh، نويسنده , , D.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
4
From page
176
To page
179
Abstract
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.
Keywords
X-ray and neutron diffraction , Cobaltites , XAFS
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2007
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2205851
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