[17a-C31-1~11] 11.1 Fundamental properties

11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)

[17a-C31-10] Study of magnetic alignment in REBa₂Cu₃O_y through sample-transport-based modulated rotating magnetic field application

〇Shintaro Adachi¹, Kimura Fumiko¹, Horii Shigeru¹ (1.KUAS)

Keywords:

cuprate superconductor,magnetic alignment,pole figure measurement

To achieve high critical current densities in both self-field and in-field conditions for high-T_c cuprate superconductors like REBa₂Cu₃O_y (RE123), it is crucial to achieve densification and orientation of a substantial number of grains. We are trusting that the magnetic alignment create new opportunities for fabricating thicker films of RE123, a goal that is challenging to achieve using epitaxial technology. Recently, our group developed an original device that can generate a linear drive type of modulated rotating magnetic fields (LDT-MRF) using the permanent magnet arrays [Horii et al., J. Cer. Soc. Jpn. 126, 885 (2018).]. Furthermore, recently, by expanding the width of magnet arrays perpendicular to the LDT direction, we have succeeded in suppressing the tilt of the sample grains in the direction of the hard magnetization axis, thereby achieving the high degrees of orientation of each grain [Adachi et al., JSAP spring MTG 2024, 24p-12P-8]. To date, such research has been carried out using batch processes, but the application of this magnetic alignment technology requires a continuous process. In this study, we added a sample transport function to the LDT-MRF system and tested a continuous magnetic alignment process.