Bi_2Sr_2CaCu_2O_x超伝導ガラスセラミックス表面及びファイバーにおける特異な結晶粒子配向

概要

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Bi_2Sr_2CaCu_2O_x glass and glass fibers were prepared by a conventional melt-quenching method and fiber drawing from a glass plate respectively, and grain orientation behavior of superconducting glass-ceramics and fibers obtained by annealing was examined. At the surface and in the interior of the glass-ceramic fiber, all caxes oriented parallel to the direction of fiber length. In the bulk glass-ceramics, the oriented grains grew from the surface to the interior of the bulk and the morphology and thickness of the oriented layer were very sensitive to the annealing atmosphere. It is concluded that the oriented layers at the surface were formed by precipitation of the Bi_2Sr_2CaCu_2O_x phase with release of oxygen absorbed during heating.
社団法人日本セラミックス協会の論文
1995-08-01