超导材料处于超导状态时电阻为零,因而可以通过极高密度的电流。用超导材料建造的磁体比用常规材料建造的磁体重量轻、体积小、需要的功率要小几个数量级。在核物理研究中用超导材料建造的磁体,成本大大低于常规材料的磁体,参看表1的比较。 Superconducting materials in the superconducting state of zero resistance, which can be very high-density current. Magnets built with superconducting materials are lighter in weight and smaller in size than the magnets built with conventional materials and require orders of magnitude less power. Magnets constructed from superconducting materials in nuclear physics studies are significantly less expensive than magnets made from conventional materials, see Table 1 for a comparison.