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Formation of the YBa2Cu2NbOy phase in thin films

Published online by Cambridge University Press:  31 January 2011

Srinivas Sathiraju ,
Paul N. Barnes  and
Robert A. Wheeler
Srinivas Sathiraju
Affiliation:
Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433
Paul N. Barnes*
Affiliation:
Propulsion Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433
Robert A. Wheeler
Affiliation:
Materials & Manufacturing Directorate (UES), Wright-Patterson Air Force Base, Ohio 45433
*
a) Address all correspondence to this author. e-mail: paul.barnes@wpafb.af.mil
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Abstract

We report the systematic substitution of Nb at the Cu1 site of YBa2Cu3Oy in thin films to form a new phase of YBa2Cu2NbO8. These films were deposited on SrTiO3(100) crystals using pulsed laser deposition and deposited at an optimal temperature of 850 °C. Films were characterized using x-ray diffraction (XRD), atomic force microscopy, x-ray photoelectron spectroscopy (XPS), micro-Raman spectroscopy, and transmission electron microscopy. XRD of these films indicate c-axis oriented YBa2Cu2NbOy formation. XPS and micro-Raman spectroscopy analysis suggests Cu exists in the +2 state.

Keywords

Laser ablationNbSuperconducting
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 1 , January 2009 , pp. 212 - 216
Copyright
Copyright © Materials Research Society 2009

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References

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