ISSN:
1434-6036
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract We report the results of XANES and EXAFS measurements performed on YBa2Cu3O7−x compounds withx ranging from 0 to 1. Data for Cu and YK-edges are presented and definite trends in the behaviour of the main near edge structures are singled out, which allow to address the question of the Cu and Y oxidation states and to elucidate the role of the chemical environment in determining the shape of the absorption lines. The inter-atomic distances as obtained by EXAFS generally agree with the results of X-ray diffraction data with the exception of the Y−O distances. Possible sources of this discrepancy are indicated.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01312819
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