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自高温氧化物超导体问世以来,人们以极大的兴趣关注其在强磁场大电流电工机器中应用的可行性.由于高温超导体存在难以克服的弱连接现象,采用常规的陶瓷粉末工艺制备的材料,其临界电流密度很低,且随磁场的升高很快退降.人们期望提高这类材料在强磁场下的J_c,以便朝实用化方向推进一步.自Jin等人采用熔融织构生长法(MTG)制备YBa_2
Since the advent of high temperature oxide superconductors, people are interested in their application in high-current electromechanical machines with strong magnetic field. Due to the insurmountable weak connection of high-temperature superconductors, the materials prepared by conventional ceramic powder technology, Its critical current density is very low, and with the magnetic field quickly fall back.It is expected to improve these materials in the strong magnetic field J_c, in order to promote the practical direction.From Jin since et al. Melt textural growth method ( MTG) to prepare YBa_2