YBa2Cu3Oy (YBCO) foam samples show an open, porous foam structure, which may have benefits for many applications of high-T c superconductors. As the basic material of these foams is a pseudo-single crystalline material with the directional growth initiated by a seed crystal similar to standard melt-textured samples, the achieved texture of the YBCO is a very important parameter. We analyzed the local texture and grain orientation of the individual struts forming the foam by means of atomic force microscopy and electron backscatter diffraction (EBSD). Furthermore, the magnetic properties of a foam strut are evaluated by means of SQUID measurements, from which the flux pinning forces were determined. A scaling of the pinning forces in the temperature range between 60 K and 85 K was performed. These data and the details of the microstructure are compared to IG-processed, bulk material.
|ジャーナル||Journal of Physics: Conference Series|
|出版ステータス||Published - 2016 3月 17|
|イベント||9th International Workshop on Processing and Applications of Superconducting (RE)BCO Large Grain Materials, PASREG 2015 - Liege, Belgium|
継続期間: 2015 9月 2 → 2015 9月 4
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