Affiliation:
1. Department of Physical Metallurgy, Technical University Clausthal, Germany
Abstract
Textures in bulk Y–Ba–Cu–O superconducting materials were studied. Texturing methods are based
on the paramagnetic anisotropy, grain-dimension anisotropy and surface-energy anisotropy of the
crystals. Five incomplete X-ray pole figures including four superimposed ones were measured for the
ODF calculation. The ODFs were calculated with the series expansion method including the positivity
method by means of an iteration process.The results show that a strong (001)-fibre texture can be achieved by magnetic alignment but the
density of the materials after sintering is still too low. The grain-dimension effect which exists in
nearly all powder-forming process, is very weak for texturing of the materials. The surface texture
depends on recrystallization of the powder particles.
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6 articles.
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