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Critical currents of aligned grains of Tl-Ba-Ca-Cu-O compounds

โœ Scribed by M.M. Fang; D.K. Finnemore; D.E. Farrell; N.R. Bansal

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
225 KB
Volume
29
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

A study of irreversibility in the magnetization curves of TI2Ba2Ca2Cu3010 and TI2Ba2Cal Cu2O 8 was undertaken to determine the intragranular critical currents and the effects of flux-creep in grain-aligned samples of these materials. For fields>0.3 T, and H parallel to c axis, the critical supercurrent falls approximately exponentially with both magnetic field and temperature. Flux-creep is found to be linear in the logarithm of time at low fields over a wide temperature range.

๐Ÿ“œ SIMILAR VOLUMES

High critical currents in polycrystallin
High critical currents in polycrystalline Tl-Ca-Ba-Cu-O films
โœ J.F. Kwak; E.L. Venturini; R.J. Baughman; B. Morosin; D.S. Ginley ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 519 KB

We present transport critical current (Jct) data for polycrystalline films in the TI-Ca-Ba-Cu-O system. Comparable results are obtained for unoriented films of TI2CaBa2Cu2Ox and unoriented and epitaxial films of TI2Ca2Ba2Cu3Ox: namely, Jcts over 105 A cm -2 (109 A m -2) at 77 K with weak sensitivity