Eur. Phys. J. Appl. Phys.
Volume 30, Number 3, June 2005
|Page(s)||171 - 174|
|Section||Surfaces, Interfaces and Films|
|Published online||14 April 2005|
Fingerprinting substitution sites in Pb,Dy-Bi2 Sr2 Ca1 Cu2 O8+δ using X-ray Photoelectron Diffraction
FR 7.2 Experimentalphysik, Universität des Saarlandes, 66123 Saarbrücken, Germany
2 Institut de Physique, Université de Neuchâtel, 2000 Neuchâtel, Switzerland
3 Institut de Physique Appliquée, EPF, 1015 Lausanne, Switzerland
Corresponding author: email@example.com
Revised: 3 February 2005
Accepted: 18 February 2005
Published online: 14 April 2005
The substitution sites of Pb and Dy dopants in the cuprate-type high temperature superconductor Bi2Sr2Ca1Cu2O are determined by a direct comparison of the angle-scanned X-ray photoelectron diffraction (XPD) patterns. We demonstrate the power of XPD as a fingerprinting tool and conclude that Pb occupies Bi sites and Dy the Ca sites. The presence of the incommensurate lattice modulation is not visible in XPD, probably due to a Pb-induced, reduced modulation amplitude.
PACS: 74.72.Hs – Bi-based cuprates / 61.14.Qp – X-ray photoelectron diffraction / 74.62.Dh – Effects of crystal defects, doping and substitution on superconducting transition temperature
© EDP Sciences, 2005
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