ENHANCEMENT OF SURFACE BARRIER DIAMAGNETISM, PARAMAGNETISM, AND CRITICAL CURRENT IN NB3ZR WIRES IN TRANSVERSE FIELDS BY AXIAL MAGNETIC FIELDS.
Rept. for Aug-Oct 67,
AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS
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The surface barrier, the diamagnetic magnetization, the residual flux, and the critical current of Nb3Zr wires in transverse fields can all be enhanced by a factor of approx. 3 by axial magnetic fields. It is argued that this arises because the pinning force density at the surface and in the bulk increases as B to the nth power where 0.5 n 1.0. The role of azimuthal currents and the effects on alternating-current losses are discussed. Author
- Electricity and Magnetism