[13p-B406-1~13] 11.3 Critical Current, Superconducting Power Applications

[13p-B406-8] Low Temperature Stress/Strain Dependence of I_c in High Strength Bi2223 Tapes

〇Satoshi Awaji¹, Kohei Sakai¹, Tatsunori Okada¹, Shinichi Kobayashi², Goro Osabe² (1.Tohoku Univ., 2.SEI)

Keywords:High temerature superconducting wire, Bi2223, Strain

High srtrength Bi2223 supercontucting tapes are used already in high field magnets such as 25T cryogen-free superconduting magnet and 1020MHz NMR magnet. However, its mechnaical properties are not yet cleay especially at low temperature in magnetic fields. We performed low tempertature measurements of stress/strain dependence of Jc in Ni-alloy reinforced Bi2223 tapes (SEI HT-Nx). The low temperature and magunetic field mechanical properties will be discussed.