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X-Ray Absorption Studies of La2−xSrxCuO4 and Y1−xPrxBa2Cu3O7-δ(*)

Published online by Cambridge University Press:  28 February 2011

E. E. Alp ,
G. K. Shenoy ,
L. Soderholm ,
G. L. Goodman ,
D. G. Hinks ,
B. W. Veal ,
P. A. Montano  and
D. E. Ellis
E. E. Alp
Affiliation:
Ar gonne National Laboratory, Argonne, Illinois 60439
G. K. Shenoy
Affiliation:
Ar gonne National Laboratory, Argonne, Illinois 60439
L. Soderholm
Affiliation:
Ar gonne National Laboratory, Argonne, Illinois 60439
G. L. Goodman
Affiliation:
Ar gonne National Laboratory, Argonne, Illinois 60439
D. G. Hinks
Affiliation:
Ar gonne National Laboratory, Argonne, Illinois 60439
B. W. Veal
Affiliation:
Ar gonne National Laboratory, Argonne, Illinois 60439
P. A. Montano
Affiliation:
Brooklyn College of CUNY Brooklyn, New York 11210
D. E. Ellis
Affiliation:
Northwestern University, Evanston, Illinois 60201.
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Abstract

The question of valence of Cu and rare-earth atoms in the newly discovered oxide superconductors with high transition temperatures is crucial to the understanding of their electronic structure. We have measured the X-Ray Absorption Near Edge Structure (XANES) of Cu K transition and Pr Ljjj transition to obtain information on the valence of Cu, and Pr in La2−xSrxCuO4 and Y1−xPrxBa2Cu3O7-δ. We will present the experimental results, compare them with calculations of absorption cross-section for model atomic clusters, and discuss the valence of Cu as a function of oxygen concentration.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 177
Copyright
Copyright © Materials Research Society 1988

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Footnotes

(*)

Work supported by US DOE, BES-Materials Sciences and Chemical Sciences, contract # W-31-109-ENG-38

References

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