The 81st JSAP Autumn Meeting, 2020

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Oral presentation

11 Superconductivity » 11.1 Fundamental properties

[9p-Z27-1~24] 11.1 Fundamental properties

Wed. Sep 9, 2020 1:00 PM - 7:45 PM Z27

Toshinori Ozaki(Kwansei Gakuin Univ.), Masanori Nagao(Univ. of Yamanashi), Kazuhiro Yamaki(Utsunomiya Univ.), Fujioka Masaya(Hokkaido Univ.)

1:00 PM - 1:15 PM

[9p-Z27-1] Development of homogeneous REBCO melt-textured bulks with selective grain-growth regions

〇Takanori Motoki1, Yu Yanai1, Kota Nunokawa1, Rempei Sasada1, Jun-ichi Shimoyama1 (1.Aoyama Gakuin Univ.)

Keywords:REBCO, melt-textured bulk, Trapped field

To achieve the biaxial oriented growth of REBCO, texturization using a seed crystal, such as in top-seeded melt growth (TSMG) or top-seeded infiltration growth (TSIG) methods, has been adopted, resulting in generations of a-growth and c-growth regions. Pronounced differences in microstructures and Jc properties have been reported between a-growth and c-growth regions. In this study, we aimed to fabricate high-performance REBCO melt-textured bulks completely composed of selective grain growth regions (i.e., whole c-grown bulks), using a new simple method focusing on the difference of peritectic temperatures of REBCOs with different rare earth elements, which is referred to as single-direction melt growth (SDMG) method.