PROCESSING AND CE-DOPING DEPENDENCE OF ND2-XCEXCUO4-DELTA CORE LEVEL SPECTRA

被引：18

作者：

KLAUDA, M

STROBEL, JP

SCHLOTTERER, J

GRASSMANN, A

MARKL, J

SAEMANNISCHENKO, G

机构：

[1] Physikalisches Institut der Universität Erlangen

来源：

PHYSICA C | 1991年 / 173卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(91)90801-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present investigations of the processing and doping dependence of the Cu 2p- and Nd 3d-core level spectra of Nd(2-x)Ce(x)CuO4-delta. The sintering process seems to enhance the overlap between Cu 3d- and O 2p-orbitals in the Cu-O-layers, whereas the reducing procedure as well as Ce-doping introduce electrons with Cu 3d-character into the T'-structure. Nd 3d-spectra show a decreasing mean overlap of Nd-orbitals with the neighbouring oxygen atoms as a result of both the sintering and reducing processes, whereas hybridizations is enhanced with increasing Ce-content of the samples. This behaviour can be explained by the removal of oxygen from the Nd-O-layers of Nd(2-x)Ce(x)CuO4-delta during the sintering and reducing procedures.

引用

页码：109 / 116

页数：8

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