NDLI: Comparative study of flux pinning flux creep and critical currents between ybacuo crystals with and without y2bacuo5 inclusions

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Comparative study of flux pinning flux creep and critical currents between ybacuo crystals with and without y2bacuo5 inclusions

Content Provider	NASA Technical Reports Server (NTRS)
Author	Murakami, Masato Fujimoto, Hiroyuki Gotoh, Satoshi Koshizuka, Naoki Tanaka, Shoji
Copyright Year	1990
Description	In the Y-Ba-Cu-O system YBa2Cu3Ox phase is produced by the following peritectic reaction: Y2BaCuO5 + liquid yields 2YBa2Cu3Ox. Through the control of processing conditions and starting compositions it becomes possible to fabricate large crystals containing fine Y2BaCuO5(211) inclusions. Such crystals exhibit Jc values exceeding 10000 A/sq cm at 77 K and 1T. Recently, researchers developed a novel process which can control the volume fraction of 211 inclusions. Elimination of 211 inclusions is also possible. In this study, researchers prepared YBaCuO crystals with and without 211 inclusions using the novel process and compared flux pinning, flux creep and critical currents. Magnetic field dependence of Jc for YBaCuO crystals with and without 211 inclusions is shown. It is clear that fine 211 inclusions can contribute to flux pinning. It was also found that flux creep rate could be reduced by increasing flux pinning force. Critical current density estimates based on the conventional flux pinning theory were in good agreement with experimental results.
File Size	47166
Page Count	1
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19900018553
Archival Resource Key	ark:/13960/t6wx2963f
Language	English
Publisher Date	1990-04-01
Access Restriction	Open
Subject Keyword	Solid-state Physics Creep Properties Crystals Estimating Magnetic Effects Process Control Industry Inclusions Fabrication Concentration Composition Flux Pinning Superconductors Materials Barium Oxides Flux Rate Current Density Copper Oxides Yttrium Oxides Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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