Fingerprinting substitution sites in Pb,Dy-Bi<sub>2</sub>Sr<sub>2</sub>Ca<sub>1</sub>Cu<sub>2</sub>O<sub>8+δ</sub> using X-ray Photoelectron Diffraction
Author(s)
Popovic, D.
Bovet, M.
Berger, H.
Aebi, Philipp
Date issued
2005
In
European Physical Journal of Applied Physics (The), Institute of Physics (IOP), 2005/30//171-174
Subjects
bi-based cuprates X-ray photoelectron diffraction effects of crystal defects doping and substitution on superconducting transition temperature
Abstract
The substitution sites of Pb and Dy dopants in the cuprate-type high temperature superconductor Bi<sub>2</sub>Sr<sub>2</sub>Ca<sub>1</sub>Cu<sub>2</sub>O<sub>8+δ</sub> 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.
Publication type
journal article
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