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本文报道反应扩散法制备Chevrel相PbMo6S8超导带材的过程以及带材的超导特性。Mo带与H2S气体反应生成单相的Mo-S化合物(MoS2或Mo2S3,根据反应温度而定),再与Pb的蒸汽反应生成单相的PbMo6S8薄层。PbMo6S8超导层的临界温度Tc=13.0The process for making Chevrel-phase PbMo6S8 superconducting tapes by reaction diffusion method and the properties of the tapes are reported. Mo tape reacts with H2S to form single phase Mo-S compound (MoS2 or Mo2S3, depends on the reaction temperature), then with Pb vapor to form single phase PbMo6S8 layers. The transition temperature of the layers are 13.0-14.5 K, the widths of the transitions are in the range of 0.15-0.20 K and Jc(6T, 4.2K) ≌1.9×l08A/m2.
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