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

Delheusy, M.; Stierle, A.; Kasper, N.; Kurta, R. P.; Vlad, A.; Dosch, H.; Antoine, C.; Resta, Andrea LU ; Lundgren, Edvin LU and Andersen, Jesper N LU (2008) In Applied Physics Letters 92(10).
Abstract
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 Nb2O5 to NbO2, 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.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Letters
volume
92
issue
10
publisher
American Institute of Physics
external identifiers
  • wos:000253989300042
  • scopus:40849113437
ISSN
0003-6951
DOI
10.1063/1.2889474
language
English
LU publication?
yes
id
94bb536e-6b91-4abf-b0a8-c9be0028bac1 (old id 1191628)
date added to LUP
2008-09-05 10:58:00
date last changed
2017-10-08 03:33:40
@article{94bb536e-6b91-4abf-b0a8-c9be0028bac1,
  abstract     = {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 Nb2O5 to NbO2, 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.},
  articleno    = {101911},
  author       = {Delheusy, M. and Stierle, A. and Kasper, N. and Kurta, R. P. and Vlad, A. and Dosch, H. and Antoine, C. and Resta, Andrea and Lundgren, Edvin and Andersen, Jesper N},
  issn         = {0003-6951},
  language     = {eng},
  number       = {10},
  publisher    = {American Institute of Physics},
  series       = {Applied Physics Letters},
  title        = {X-ray investigation of subsurface interstitial oxygen at Nb/oxide interfaces},
  url          = {http://dx.doi.org/10.1063/1.2889474},
  volume       = {92},
  year         = {2008},
}