NDLI: The role of platinum in partial melt textured growth of bulk YBCO

Content Provider	IEEE Xplore Digital Library
Author	Wegmann, M.R. Lewis, J.A.
Copyright Year	2002
Abstract	Previous research has shown that vacuum filtration of particulate YBa/sub 2/Cu/sub 3/O/sub 7-x/ (Y123) suspensions in an applied magnetic field under ambient conditions, followed by partial melt processing can produce well textured Y123 thick films. In addition, the microstructural development and magnetic properties were shown to be enhanced in the presence of platinum during heat treatment. Thermal analysis revealed that platinum reduces the decomposition temperature of pure Y123 (1030/spl deg/C in O/sub 2/) by 70/spl deg/C. The current focus of this research is to further exploit this effect and develop a better understanding of the role of platinum during heat treatment. We have successfully duplicated the magnetic and microstructural enhancements observed in earlier work by adding Pt powder directly to the Y123 suspensions and heat treating the films on inert MgO substrates. The enhancement in the magnetic properties was shown to persist independent of any grain size effects resulting from improved microstructural development.<>
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1560
Ending Page	1563
Page Count	4
File Size	674576
File Format	PDF
ISSN	10518223
Volume Number	5
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Platinum Yttrium barium copper oxide Suspensions Magnetic properties Heat treatment Filtration Magnetic fields Melt processing Thick films Thermal decomposition
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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