Deposition studies and coordinated characterization of MOCVD YBCO films on IBAD-MgO templates

T. Aytug, M. Paranthaman, L. Heatherly, Y. Zuev, Y. Zhang, K. Kim, A. Goyal, V. A. Maroni, Y. Chen, V. Selvamanickam

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21 Scopus citations

Abstract

A recently installed research-scale metal-organic chemical vapor deposition (MOCVD) system at Oak Ridge National Laboratory, provided by SuperPower, Inc., has been used to investigate processing variables for MOCVD YBCO precursors and trends in the resulting properties. Systematic studies of YBCO film growth on LaMnO3/IBAD-MgO templates were carried out by optimizing deposition temperature and oxygen flow rate. Microstructural and superconducting properties of the YBCO films were analyzed by x-ray diffraction, scanning electron microscopy and transport measurements. The identification of intermediate phases formed during the YBCO precursor transformation was investigated by coordinated reel-to-reel Raman microprobe analysis. With this combination of various characterization techniques, an improved understanding of the growth characteristics of MOCVD YBCO films was established. Finally, critical current densities greater than 2MAcm-2 for film thicknesses of 0.8νm were demonstrated.

Original languageEnglish
Article number015008
JournalSuperconductor Science and Technology
Volume22
Issue number1
DOIs
StatePublished - Jan 1 2009

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