Dense (Bi, Pb) 2 Sr 2 Ca 2 Cu 3 O x bars were fabricated by sinter forging. The bars were highly phase-pure and exhibited strong textures in which the c axes of the platelike grains were preferentially aligned parallel to the pressing direction. Transport critical current densities increased with texture, reaching a maximum of 8*10 3 A cm -2 at 77 K in a self-field. Optimal processing in air occurred at 845-850 degrees C.
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Chen et al. (1993) studied this question.
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