在可实用高温超导体中，Bi－2223As带材能够拥有最大的临界电流密度（上）．澳大利亚历伦贡大学超导和电子材料中心的人Horvat及其同事宣称，已经生产出了几rs的1000m长带．如此高的几值是带内晶粒良好排列和连结的共同结果．可惜的是，这类高To扭导材料的协对于磁场是非常敏迹 In practical high-temperature superconductors, Bi-2223As tape can have the maximum critical current density (on). Horvat and colleagues at the Center for Superconductivity and Electronic Materials at the University of Leicester, Australia, have claimed that they have produced 1000-meter ribbons with a few rs. Such high values ​​are the common result of good alignment and bonding of the in-band grains. Unfortunately, this type of high-to-torsional guidance is very sensitive to magnetic fields