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AC susceptibility with superimposed DC magnetic field in a current biased granular high Tc superconductor

✍ Scribed by G. Codner; H. Ferrari; C. Acha; V. Bekeris; P. Levy

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 114 KB
Volume: 235-240
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(94)91140-1

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✦ Synopsis

Cap.Fed. Argentina bDivisidn Fisica del S61ido, Comisidn Nacional de Energia Atdnfica, Libertador 8250 (1429) Cap.Fed. Argentina

We have investigated the effect in AC magnetic susceptibility, X~ = X' + J X", of both DC transport current, Jt , and DC magnetic field, Hac, in polycristalline HTSC. Two regimes are observed: at low DC fields critical state is modified by the current self field; but as Hac is increased, Jt becomes dissipative (Vac¢ 0) and X~ is determined by the sample's "resistance".

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