Abstract
We measured the dependence of the remanent magnetization of multifilamentary $(\mathrm{P}\mathrm{b},\mathrm{B}\mathrm{i}{)}_{2}{\mathrm{Sr}}_{2}{\mathrm{Ca}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{10+x}$ tapes on the angle between tape surface and magnetic field. Remanent magnetization allows one to separate the intergrain and intragrain contributions. The angle dependence of the intergrain magnetization is accurately described by a thin strip model. The intragrain magnetization can be reproduced by regarding the microstructure as an agglomeration of plateletlike grains. The orientation of the grains is described by a Gaussian distribution. Based on this model we develop a comparatively simple method to determine the mean grain alignment within the tapes. A comparison of the grain alignment inferred from magnetization as well as transport measurements provides direct evidence for the presence of a critical angle for Bi-2223 grain boundaries.
Published Version
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