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本文研究了HgSr2Ca0.7Y0.3Cu1.8Re0.2Oz和Hg(Ba0.5Sr0.5)2CaCu1.8Re0.2Oz(Hg1212)超导体的磁化弛豫,发现磁化弛豫偏离了对数时间依赖关系.采用指数弛豫表达式\$M=M0+M1t-α\$,可以很好地拟合Hg基超导体的磁化弛豫.通过比较Hg1212、YBa2Cu3O7-δ和Bi2Sr2CaCu2O8的磁化弛豫行为,研究了磁化弛豫率和钉扎势随CuO2层间距离的变化关系,发现磁化弛豫率随层间距离增大而增大,而钉扎势则随之增大而减小.P.

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