The influence of annealing condition is presented for high T c superconducting oxide (Ba2Y)Cu3O7-x via investigation of the structure and electrical resistivity. It is found that T c depends strongly on the annealing temperature and annealing time. T c is higher for the sample with the greater orthorhombic distortion, that is, the greater difference between the lattice constant a and b.
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Takagi et al. (1987) studied this question.
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