[21a-B104-1~11] 10.5 Application of magnetic field

[21a-B104-10] Determination of crystal forms in DyBa₂Cu₃O_7-d powder by in-situ X-ray diffraction measurements under static and rotating magnetic fields II

〇Fumiko Kimura¹, Shintaro Adachi¹, Bin Ali Walid¹, Shigeru Horii¹, Tsunehisa Kimura² (1.Kyoto Univ. Adv. Sci., 2.Fukui Univ. Tech.)

Keywords:superconductor, magnetic orientation, X-ray diffraction

The superconducting properties of the superconducting ceramic DyBa₂Cu₃O_7-δ (Dy123, 0 ≤ δ ≤ 1) with high critical temperature are sensitive to the content of oxygen. Samples prepared near the transition region were investigated by in-situ X-ray diffraction measurements under static and rotating magnetic fields (2D XRD method), and they are mixtures of tetragonal and orthorhombic crystals. This distinction is based on the difference in symmetry between the two crystal systems. In this study, we investigated the crystal system of Dy123 crystals prepared below the transition region by using the 2D XRD diffraction images.