X-ray investigation of subsurface interstitial oxygen at Nb/oxide interfaces

被引：93

作者：

Delheusy, M. ^{[1
,3
]}

Stierle, A. ^{[1
]}

Kasper, N. ^{[1
]}

Kurta, R. P. ^{[1
]}

Vlad, A. ^{[1
]}

Dosch, H. ^{[1
]}

Antoine, C. ^{[3
]}

Resta, A. ^{[2
]}

Lundgren, E. ^{[2
]}

Andersen, J. ^{[2
]}

机构：

[1] Max Planck Inst Met Res, D-70569 Stuttgart, Germany

[2] Lund Univ, Dept Synchrotron Radiat Res, S-22100 Lund, Sweden

[3] Dapnia SACM Ctr Etude Saclay, Commiss Energie Atom, F-91191 Gif Sur Yvette, France

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 10期

关键词：

D O I：

10.1063/1.2889474

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the dissolution of a natural oxide layer on a Nb(110) surface upon heating, combining x-ray reflectivity, grazing incidence diffuse scattering, and core-level spectroscopy. The natural oxide reduces after heating to 145 degrees C partially from Nb(2)O(5) to NbO(2), and an enrichment in subsurface interstitial oxygen by similar to 70% in a depth of 100 A is observed. After heating to 300 degrees C, the oxide reduces to NbO and the surplus subsurface oxygen gets dissolved into the bulk. Our approach can be applied for further investigation of the effect of subsurface interstitial oxygen on the performance of niobium rf cavities. (C) 2008 American Institute of Physics. (C) 2008 American Institute of Physics.

引用

页数：3

共 27 条

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