Journal
APPLIED PHYSICS EXPRESS
Volume 16, Issue 9, Pages -Publisher
IOP Publishing Ltd
DOI: 10.35848/1882-0786/acf3d0
Keywords
REBCO; single-direction melt growth; melt textured bulk; SDMG; NMR; superconducting bulk magnet; ring-shaped bulk
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Ring-shaped REBa2Cu3Oy melt-textured bulks with high trapped field and uniform superconducting properties were successfully grown using the single-direction melt growth method. The study achieved the highest trapped field value of 1.84 T at 77 K among reported ring-shaped bulks, along with concentrically cone-shaped trapped field distribution. These findings demonstrate significant advancement in the fabrication of high-quality bulks for various magnetic applications.
Ring-shaped REBa2Cu3Oy melt-textured bulks have been successfully grown by the single-direction melt growth (SDMG) method. Three homogeneous DyBa2Cu3Oy ring-bulks were directly grown in this study, which exhibited concentrically cone-shaped trapped field distribution on the surface and a high trapped field of 1.84 T at 77 K inside the ring, the highest ever value among reported ring-shaped bulks to date. Furthermore, superconducting properties such as superconducting transitions and critical current densities are highly uniform throughout the bulk, confirming the effectiveness of the SDMG approach. Our findings represent a significant advancement in the fabrication of high-quality bulks suitable for various magnetic applications.
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