[16p-P04-1~21] 11 Superconductivity(Poster)

[16p-P04-1] Physical properties of RE123 melt-textured bulks through control of starting metal compositions

〇Takuma Tomihisa¹, Takanori Motoki¹, Kota Nunokawa¹, Rempei Sasada¹, Jun-ichi Shimoyama¹ (1.Aoyama Gakuin Univ.)

Keywords:superconductor

REBa₂Cu₃O_y (RE123) melt-textured bulks are pseudo-single crystals grown from seed crystals during the slow cooling process from a partially molten state. Its bulks are expected to be used for strong superconducting magnets due to its high J_c even under high magnetic fields. However the larger the ionic radius of RE³⁺ in RE123, the more likely it is to form RE_1+xBa_2-xCu₃O_y solid solution, and it is important to control the amount of solid solution x. In this study, we prepared Gd123 melt-solidified bulks by Single-Direction Melt Growth (SDMG) method from precursor sintered pellets with different Ba compositions to control the solid solution content, and examined their physical properties.