Experimental study of the effect of filament orientation on transport and magnetic ac loss in Bi-2223/Ag multifilamentary tapes
作者： F Gömöry , J Souc , A Laudis , P Kovác , I Husek
DOI: 10.1088/0953-2048/13/12/303
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摘要: Losses of electromagnetic energy in cyclic regimes were investigated for two tapes with flat Bi-2223 grains different directions respect to the tape wide face. This was achieved through having angles between faces strip-like filaments and that tape: first this angle zero while second it a right angle. In transport (self-field) conditions, comparison theoretical predictions homogeneous isotropic material revealed opposite deviations at low currents. The parallel filament orientation exhibited higher loss than extrapolated from critical current density measured fully saturated state, transversal lower expected. We explain self-field boundary shell carrying ac amplitude. also performed measurements external magnetic field, which always perpendicular Magnetization results can be interpreted terms flux penetration individual filaments. Spread quality caused absorption peak broader expected an ideal, material.
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