ICCAS OpenIR
XPS studies of superconducting Gd-Ba-Cu-O films
Zhao, LZ; Wang, RL; Xu, HY; Li, HC; Liu, SH
1999-05-01
Source PublicationACTA PHYSICO-CHIMICA SINICA
ISSN1000-6818
Volume15Issue:5Pages:398-402
AbstractSuperconducting Cd-Ba-Cu-O films with varying T-c were studied by using XPS quantitative analysis, XPS angular distribution, XPS imaging and ion etching. The results show that the surface layer of all films is Ba enriched and lacking in Gd. The elemental distribution on surface is inhomogeneous. The surface and the deep region of the films are contaminated by C-containing compounds. As compared with the sample with T(c)greater than or equal to 87K, the sample with T-c <77K has the highest atomic concentration of Ba(HBE) and O(HBE) corresponding to non-superconducting phase on the surface. In the deep region (20 similar to 30 nm) of sample with T-c <77K, the chemical composition is still nonstoichiometry. The contamination of C-containing compounds in both the surface and the deep region is more serious for the sample with T-c <77K than the samples with T(c)greater than or equal to 87K.
KeywordSuperconducting Gd-ba-cu-o Films Xps Xps Imaging Ar++++ Ion Etching
DOI10.3866/PKU.WHXB19990503
Indexed BySCI
Language英语
WOS IDWOS:000080386600003
PublisherPEKING UNIV PRESS
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Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/75258
Collection中国科学院化学研究所
Corresponding AuthorZhao, LZ
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Inst Phys, Natl Lab Superconductiv, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhao, LZ,Wang, RL,Xu, HY,et al. XPS studies of superconducting Gd-Ba-Cu-O films[J]. ACTA PHYSICO-CHIMICA SINICA,1999,15(5):398-402.
APA Zhao, LZ,Wang, RL,Xu, HY,Li, HC,&Liu, SH.(1999).XPS studies of superconducting Gd-Ba-Cu-O films.ACTA PHYSICO-CHIMICA SINICA,15(5),398-402.
MLA Zhao, LZ,et al."XPS studies of superconducting Gd-Ba-Cu-O films".ACTA PHYSICO-CHIMICA SINICA 15.5(1999):398-402.
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