Achieving higher orientation degree in DyBa₂Cu₃O_y (y 7) superconductor through linear drive type of modulated rotating magnetic field

This study presents an approach to achieve a triaxial magnetic alignment through a linear drive type of modulated rotating magnetic field by using a permanent magnet array. This magnet array generates a modulated rotating magnetic field (MRF) without moving the sample and can produce an MRF of similar to 0.8 T. By utilizing this magnet array, DyBa2Cu3Oy (Dy123, y similar to 7) grains were biaxially aligned. After cutting the as-aligned sample that was magnetically aligned, we observed a location dependence of the orientation degree. We achieved the higher in-plane orientation degree of similar to 8.5 degrees and the c-axis orientation degree of similar to 6.0 degrees, respectively. The 3D simulation analysis played a key role in identifying the region where the uniformity of the MRF is within the magnet array. Compared to the epitaxial growth techniques, the use of the magnet array offers a cost-effective and versatile solution for achieving triaxial magnetic alignment.