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ST160 - Sn Concentration Gradients in Powder-in-Tube Superconductors

Sn Concentration Gradients in Powder-in-Tube Superconductors

M. Cantoni1, C. Scheuerlein2, P.-Y. Pfirter1, F. de Borman1,
J. Rossen1,  G. Arnau2, L. Oberli2 and P. Lee3

1Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland 
2European Organization for Nuclear Research (CERN), Geneva, Switzerland
3Applied Superconductivity Center, NMFL,
Florida State University, Tallahassee, FL 32310 USA

Corresponding author: [email protected]

ABSTRACT - The Sn concentration gradients across the A15 phase have been studied by Energy Dispersive X-ray Spectroscopy (EDS) measurements. High spatial resolution EDS measurements in the Transmission Electron Microscope reveal a comparatively strong Sn concentration gradient from the periphery towards the centre of individual Nb3Sn grains.

IEEE/CSC & ESAS EUROPEAN SUPERCONDUCTIVITY NEWS FORUM (ESNF), No. 11, January 2010
Published in Journal of Physics Conf. Series (SuST234, 022005 (2010)