NDLI: Solid-state high-oxygen-fugacity processing of BSCCO-2212 superconductors

Content Provider	IEEE Xplore Digital Library
Author	Gannon Jr., J.J. Sandhage, K.H.
Copyright Year	2002
Abstract	Silver-sheathed powder-in-tube processed tapes and thick films of the Bi/sub 2/Sr/sub 2/Ca/sub 1/Cu/sub 2/O/sub 8/spl plusmn//spl delta//-type (Bi-2212) superconductor have been annealed under high temperature, high oxygen fugacity (i.e.fO/sub 2/>0.1 MPa) conditions. At sufficiently high temperatures and oxygen fugacities, the Bi-2212 phase decomposes into a mixture of solid oxides: a Bi/sub 2/(Sr,Ca)/sub 2/Cu/sub 1/O/sub 8/spl plusmn//spl delta//-type (Bi-2201) phase, an alkaline-earth bismuthate Bi/sub 9/Sr/sub 1/1Ca/sub 5/O/sub y/-type (Bi-91_1_5) phase and CuO. Subsequent reformation of Bi-2212 in pure, flowing oxygen at 0.1 MPa and 860/spl deg/C has yielded plate-like grains with enhanced 00l texture (as discerned from X-ray pole figure analyses and electron microscopy). The values of oxygen fugacity leading to sub-solidus decomposition and reformation of Bi-2212 at 500 to 860/spl deg/C are given. XRD and SEM analyses, as well as preliminary critical current measurements of decomposed and reformed Bi-2212 tapes, are presented.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1533
Ending Page	1536
Page Count	4
File Size	798413
File Format	PDF
ISSN	10518223
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solid state circuits Bismuth High temperature superconductors Strontium Scanning electron microscopy Thick films Superconducting films Annealing Electron microscopy X-ray scattering
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Effects of Bi and Bi/sub 2/0/sub 3/ additions on the microstructure and superconducting properties of powder-in-tube BSCCO (2212) tapes

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Effect of 3d-metal sulfide doping on the superconducting properties of Bi-2212 superconductors

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Solid-state high-oxygen-fugacity processing of BSCCO-2212 superconductors

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