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The critical current in a NbTi tape measured in different directions of magnetic field and the current reduction due to the self field

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4 Author(s)
Ten Haken, B. ; Appl. Superconductivity Center, Twente Univ., Enschede, Netherlands ; van de Klundert, L.J.M. ; Vysotsky, V.S. ; Karasik, V.R.

With reference to the application of NbTi tape in a superconducting thermal switch, the critical current of a 20-μm-thick NbTi tape was measured in several directions of the magnetic field. The critical current was found to behave strongly anisotropically, due to the deformation of the NbTi. The tape is extrasensitive to the component of the magnetic field perpendicular to the surface. Without an external field this component of the self-field reduces the critical current far below its intrinsic value. A one-dimensional model can describe the reduction of critical current due to the self-field in a thin tape

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Magnetics, IEEE Transactions on  (Volume:28 ,  Issue: 1 )