[11p-E215-1~7] 10.5 Application of magnetic field

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)

[11p-E215-1] Effect of Twin Domains on Magnetic Susceptibility Anisotropy in Y_0.5Er_0.5Ba₂Cu₃O_y and DyBa₂Cu₃O_y Studied by in situ XRD

〇Fumiko Kimura¹, Shintaro Adachi¹, Shigeru Horii¹, Toshiya Doi², Masato Yoshimura³, Masahisa Wada⁴, Tsunehisa Kimura^1,4 (1.Kyoto Univ. Adv. Sci., 2.Kyoto Univ., Energy Sci., 3.NSRRC, 4.Kyoto Univ., Agric.)

Keywords:

RE123,magnetic alignment,twin structure

REBa₂Cu₃O_y (RE123) superconductors require precise biaxial alignment to achieve high critical current density. In this study, magnetic alignment based on anisotropic magnetic susceptibility was investigated, focusing on the effects of twin structures. Microcrystals of Y_0.5Er_0.5Ba₂Cu₃O_y (YEr123) and DyBa₂Cu₃O_y (Dy123) were prepared and analyzed by in situ X-ray diffraction under modulated rotating magnetic fields. The twin fraction was evaluated from the azimuthal intensity of {200}/{020} reflections, yielding a value of ~0.30 for YEr123 (y ≈ 6.96). The relationship between twin fraction and effective magnetic anisotropy is discussed, particularly for Dy123.