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Measurement of the current density alinf the c-axis in silver sheated (Bi, Pb)2Sr2Ca2Cu3Ox tapes

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Published in Physica C: Superconductivity and Its Applications. 1994, vol. 235-240, p. 3029-3030
Abstract We measured the magnetic properties of silver sheathed Bi2223 tapes with emphasis on the case where H ⊥ c. All measurements were carried out at 77K. Three regimes were dfound in which the mechanism determining the magnetic hysteresis is different. Below the irreversibility line for H | c the magnetic hysteresis for H ⊥ c is enlarged due to slight misalignments of the tape with respect to the magnetic field. No solution for the anisotropic critical state is found. Just above this irreversibility line the current along a,b-direction appears to be the limiting factor for the critical state. Resistively and inductively measured Jc are equal at this point. In still fields (> 0.4T) the critical state is determined by current transport along the c-direction. This current is two to three orders of magnitude lowe than the critical current in a,b direction.
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DAUMLING, Manfred, GRASSO, Giovanni, FLUKIGER, René-Louis. Measurement of the current density alinf the c-axis in silver sheated (Bi, Pb)2Sr2Ca2Cu3Ox tapes. In: Physica C: Superconductivity and Its Applications, 1994, vol. 235-240, p. 3029-3030. https://archive-ouverte.unige.ch/unige:91542

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Deposited on : 2017-02-01

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