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The use of phase diagrams for the engineering of flux pinning centres in Bi2Sr2CaCu2O8 ceramics

โœ Scribed by Peter Majewski

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
1001 KB
Volume
3
Category
Article
ISSN
0964-1807

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โœฆ Synopsis

From considerations of the phase equilibrium diagram of the system BiaOa-PbO-SrO-CaO-CuO, different annealing procedures were developed to precipitate various second phases in hightemperature superconducting BiaSraCaCuaOs ceramics with different chemical compositions. In each case, the precipitation results in an increase of the intragranular critical current density of the samples which is believed to express improved pinning properties of the superconducting ceramics, in particular an increased .pinning energy, which reduces the probability for thermally activated depinning.

๐Ÿ“œ SIMILAR VOLUMES

On the phase decomposition of Bi2Sr2CaCu
On the phase decomposition of Bi2Sr2CaCu2O8
โœ V. Putlayev; S. Sokolov; P. Kazin; A. Veresov; Yu. Tretyakov ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 317 KB

One of the ways to increase pinning force in superconductors is to create small precipitates of secondary phases in the bulk matrix. The samples of superconductor Bi, ,x Sr,\_XCa,Cu,O, with different compositions have been decomposed according to the phase diagram of the BiO , .5 -Sr&CaO-CuO system