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我国高温超导材料研究取得重大突破。北京有色金属研究院任洪涛小组研制成功块状高电流密度钇钡铜氧超导材料,专家们确认,这项成果具有世界先进水平。从今年3月以来连续4次在中国科学院物理所进行测试,电流密度指标稳步提高。在77K 温度,2T 强度的条件下,采用连续直流电流四引线法测得这种材料电流密度达到23800A/cm~2,在7T 磁场下电流密度达到86000A/cm~2,从而使超导材料的研究向应用阶段跨出了一大步。
China’s high-temperature superconducting materials research has made major breakthroughs. Beijing Institute of Nonferrous Metal Ren Hongtao group successfully developed block-shaped high current density yttrium barium copper oxygen superconducting materials, experts have confirmed that this result has the world’s advanced level. From March this year, four consecutive times in the Institute of Physics, Chinese Academy of tests, the current density index increased steadily. Under the conditions of 77K temperature and 2T intensity, the current density of the material reaches 23800A / cm ~ 2 and the current density reaches 86000A / cm ~ 2 under the condition of 7T magnetic field with continuous direct current four-lead method, The research took a big leap toward the application phase.