A Hg-based superconducting cuprate film on a substrate is disclosed, which comprises a compound having the formula Hg.sub.1-x M. sub.x Ba.sub. 2 Ca.sub.n-1 Cu.sub.n O.sub.y, M is a metal cation, x ranges from 0 to 1, n is an integer greater than 0, and y is an oxygen sufficiency factor having a value less than about 10.
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机译：公开了一种在基底上的基于Hg的超导铜酸盐膜，其包含具有式Hg 1-x M x Ba x的化合物。 2 Ca·n-1 Cu·sub·n Oy，M为金属阳离子，x为0至1，n为大于0的整数，y为具有以下值的氧充足系数小于约10
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