XANES OF X-RAY ABSORBTION K-EDGES OF CHROMIUM DICHALCOGENIDES CuCr1-xMx'S2 AND MCrX2
E. V. Korotaev1, V. V. Kanazhevskiy2,3, N. N. Peregudova1, M. M. Syrokvashin1, L. N. Mazalov1,2, V. V. Sokolov1, I. Yu. Filatova1, A. Yu. Pichugin1
1Nikolaev Institute of Inorganic Chemistry, SB RAS, Novosibirsk, Russia
2Novosibirsk National Research State University, Novosibirsk, Russia
3Boreskov Institute of Catalysis, SB RAS
Keywords: катион-замещенные дихалькогениды хрома, твердые растворы, термоэлектрические материалы, XANES спектроскопия, FDMNES, метод конечных разностей, cation substituted chromium dichalcogenides, solid solutions, thermoelectrical materials, XANES, K-edge, finite difference method
Abstract
In the work X-ray K-edges of chromium dichalcogenides (M = V, Fe; x = 0-0.40) and MCrX2 (M = Cu, Ag, Na; X = O, S, Se) were studied experimentally and theoretically. Comparison of fine structures of experimental XANES spectra obtained using a synchrotron radiation source and theoretical absorption spectra modelled using FDMNES software package allows one to study the influence of types of intercalate M, chalcogene X and also the effect of the cation substitution of chromium atoms by vanadium and iron on XANES structure of K-edges in and MCrX2.
|
