کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1818886 | 1525753 | 2010 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Batch-processed GdBCO–Ag bulk superconductors fabricated using generic seeds with high trapped fields Batch-processed GdBCO–Ag bulk superconductors fabricated using generic seeds with high trapped fields](/preview/png/1818886.png)
Large, single grains of Y–Ba–Cu–O (YBCO) have been batch-processed to date by the top seeded melt growth (TSMG) process using NdBCO or SmBCO seed crystals. It has proved difficult, however, to economically batch-process light rare earth (LRE) LRE–Ba–Cu–O bulk high temperature superconductors, which have higher critical current densities and irreversibility fields than YBCO, and therefore greater potential for high field engineering applications. In this paper, we report a novel batch-process based on a cheap, readily available generic seed crystal, developed recently at Cambridge, and a TSMG melt processing technique based on cold seeding in air for the batch fabrication of Gd–Ba–Cu–O–Ag single grains. The superconducting properties of the (LRE)BCO single grains fabricated by this process are, in all respects, equivalent to those processed more conventionally in a reduced oxygen atmosphere.
Journal: Physica C: Superconductivity - Volume 470, Issues 17–18, 1 September 2010, Pages 685–688