講演情報
[24p-12P-8]高度に配向されたREBa2Cu3Oy作製に向けた磁場配向用配列磁石の拡幅
〇足立 伸太郎1、アリ ワリドビン1、木村 史子1、堀井 滋1 (1.京都先端科学大)
キーワード：
磁場配向,銅酸化物高温超伝導体,DyBa2Cu3Oy (Dy123)
Previously, achieving biaxial magnetic alignment of various RE123 materials required the use of a superconducting magnet [Horii et al., SuST 29, 125007 (2016).]. However, the application of huge and costly superconducting magnets imposes limitations. Recently, our group developed a novel device that can generate a linear drive type of modulated rotating magnetic field (LDT-MRF) using a permanent magnet array [Horii et al., J. Cer. Soc. Jpn. 126, 885 (2018).]. By using only permanent magnets as the magnetic field generation source, this magnetic alignment device is compact and has low operational costs. To date, this LDT-MRF equipment had achieved a static magnetic field of 0.9 T and a rotating magnetic field of 0.8 T. However, a challenge emerged last year when we observed that the MRF uniformity perpendicular to the reciprocating motion of the magnet array did not reach the cm scale (it was a few mm) [Ali et al., JAP 134, 163901 (2023).]. To overcome this problem, we have developed a new magnet array designed. In this presentation, we will report that our new magnet arrays can fabricate highly oriented anisotropic materials over the cm scale.