[20p-C207-1~16] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

△ [20p-C207-15] Fabrication of NdFeAs(O,H) epitaxial thin films

〇Keisuke Kondo¹, Motoki Seiya¹, Hatano Takafumi¹, Urata Takahiro¹, Iida Kazumasa^1,2, Ikuta Hiroshi¹ (1.Nagoya Univ., 2.JST CREST)

Keywords:superconductor, iron-based superconducting thin film, hydrogen doping

We report on the fabrication of NdFeAs(O,H) epitaxial thin films using a topotactic reaction. The change in the lattice constant suggests that NdFeAsO is doped with H. Indeed, the resistance measurement showed that an onset T_c of 48 K, and a zero resistance of 35 K, respectively. The magnetization measurements exhibited a self-field critical current density of over 1 MA/cm² at 4 K.