[13p-B408-1~16] 11.1 Fundamental properties

[13p-B408-14] Synthesis of dense BaFe₂As₂ polycrystalline bulks by spark plasma sintering

〇Shinnosuke Tokuta^1,4, Rikuta Fujii¹, Yusuke Shimada^2,4, Satoshi Hata^3,4, Akiyasu Yamamoto^1,4 (1.Tokyo Univ. of Agri. and Tech., 2.Tohoku Univ., 3.Kyushu Univ., 4.JST-CREST)

Keywords:iron-based superconductor, 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 sample with high purity and high density (~98%) was successfully synthesized and a sharp superconducting transition of electrical resistivity was observed.