【摘要】 本文报告了扩散Nb₃Sn和气相沉积Nb₃Sn带材样品在4.2K、高磁场（～22T）下的临界电流测量结果,表明这两种材料具有良好的超导性能,在12T下,其Jc（Nb₃Sn）分别为3.0×10³A/cm²及2.9×10⁵A/cm²;在15T下分别为1.4×10⁵A/cm²及6.0×10⁴A/cm².文中对测量结果进行了简要评价.更多还原

【Abstract】 The measurements of critical current of a CVD-Nb₃Sn tape and a modified diffu-sion processed Nb₃Sn tape at 4.2 K in high magnetic fields （～22T） show that thesetwo Nb₃Sn tapes have good superconducting properties. The critical current densityJ_c （Nb₃Sn） at 4.2K is as follows: For diffusion processed Nb₃Sn tape, 3.0×10⁵ A/cm² （12T） and 1.4×10⁵ A/cm²（15T）; For CVD-Nb₃Sn tape, 2.9×10⁵ A/cm² （12T） and 6.0×10⁴ A/cm² （15T）, respective-ly. A discussion of the measurements has also been made.更多还原