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RAPID COMMUNICATION YBCO melt-textured growth seeded by superheating YBCO/MgO thin film
Supercond. Sci. Technol. 18(2005)L31-L34，-0001，（）：
Using YBCO/MgO thin films, for the first time, we report a success in the melt-textured growth of YBCO bulks by the cold-seeding method. The grown bulk has a good orientation relation of YBCO 〈100〉 bulk Ⅱ YBCO 〈100〉 film Ⅱ MgO 〈100〉 substrate. In this process, the YBCO film withstood heating over its peritectic temperature (up to 1045℃) for 1.5 h and acted as a seed for the YBCO bulk growth, indicating an intrinsic superheating property, which was reported in other work. The unique superheating mechanism in this study was clarified. It was found that the a-b alignment of YBCO film plays a key role in controlling the single grain growth of YBCO bulk.
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