[17p-Z20-1~13] 11.1 Fundamental properties

[17p-Z20-3] Low temperature synthesis of K-doped BaFe₂As₂ polycrystalline bulks by spark plasma sintering

〇(D)Shinnosuke Tokuta^1,4, Yuta Hasegawa¹, Rikuta Fujii¹, Yusuke Shimada^2,4, Satoshi Hata^3,4, Akiyasu Yamamoto^1,4 (1.TUAT, 2.Tohoku Univ., 3.Kyushu Univ., 4.JST-CREST)

Keywords:Iron-based superconductors, Spark plasma sintering, Polycrystalline bulk

K-doped Ba122 polycrystalline bulks were synthesized by spark plasma sintering (SPS), and density, phase purity, microstructure, and superconducting properties were evaluated. A high J_c(5 K, self-field) above 10⁵ A/cm² was obtained for a sample sintered at 550℃ for 30 min.