Abstract
Dispersed, uniaxially-aligned powder composites of R/sub 1/Ba/sub 2/Cu/sub 3/O/sub 7-x/ (R=Y or Ho) were formed by suspending the powder in a liquid organic matrix that was then solidified in a magnetic field. From the observed particle dimensions and magnetic susceptibility measurements for fields applied either parallel or perpendicular to the Cu-O planes, the authors infer anisotropies in the superconducting magnetic penetration depth lambda . From the magnetization hysteresis in the mixed state they derive relative anisotropies in the critical-current densities J/sub c/. The observed anisotropies are qualitatively similar for both rare-earth-based materials but show some quantitative distinctions.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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