[Tu-L] Poster Session

[Tu-L-30] Magnetic Field-Temperature Phase Diagram of Fine YBa₂Cu₃O_7-δ Ceramics from Linear and Non-linear Resistivities

*Akihiko Hisada¹, Kuniyuki Koyama¹, Ko-ichi Magishi¹, Takahito Saito¹, Hiroyuki Deguchi², Makoto Hagiwara³ (1. Tokushima University(Japan), 2. Kyushu Institute of Technology(Japan), 3. Kyoto Institute of Technology(Japan))

キーワード：ceramic superconductor, submicron grain, successive phase transition, inter-grain ordering, chiral-glass phase