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Study of the Environment of Copper in Some Ternary Chalcogenides by EXAFS Spectroscopy
Author(s) -
Deshpande A. P.,
Sapre V. B.,
Mande C.
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221450105
Subject(s) - extended x ray absorption fine structure , ternary operation , coordination number , copper , shell (structure) , atom (system on chip) , chemistry , absorption (acoustics) , crystallography , bond length , phase (matter) , spectroscopy , absorption spectroscopy , materials science , physics , computer science , optics , crystal structure , quantum mechanics , organic chemistry , embedded system , composite material , programming language , ion
Abstract The EXAFS data of the K absorption discontinuity of copper in some ternary chalcogenides obtained earlier are reanalysed using the graphical method originally proposed by Lytle, Sayers, and Stern. It is shown that the graphical method gives useful information about bond lengths, and also the environment of the absorbing atom. While the phase parameters of the first coordination shell α 1 and β 1 provide information about the forward and backscattering atoms, respectively, the total phase shift δ 1 gives an idea about the periodicity of the EXAFS function. It is also shown that the periodicity is affected by the presence of the other atoms in the second coordination shell in the ternary compounds studied. The potentiality of the graphical method to probe the environment of atoms is demonstrated.