✦ LIBER ✦

A.C. susceptibility and critical current density of Bi-based oxide superconductors

✍ Scribed by Keisuke Yamamoto; Junichi Kai; Makoto Hiraoka

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 173 KB
Volume: 185-189
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(91)91286-d

No coin nor oath required. For personal study only.

✦ Synopsis

Polycrystalline oxide superconductors exhibit a complex magnetic susceptibility which is dependent on temperature. For a gi~en applied magnetic field, the imaginary component of the observed susceptibility can be maximized at Tci, the peak temperature. We have investigated the relationship between the dependence of J^ on applied D.C. magnetic field Hd_ and the dependence of Tci on the magnitude of applied A.C. f~eld H^^ for samples of silver-sheathed Bi I xPb^ 2SriCa]+. Cu I =O_ superconducting tapes. From the investigation, it was found that Tel was, in aYl cases, ~nve~e~y related to the applied A.C. field. However, the degree to which Tci was sensitive to Hac correlated with the degree to which Jc decreased with increasing Hdc.

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