Abstract
According to the scaling function of vortex glass phase transition, a general description for the peak temperatures T P of frequency- and amplitude-dependent ac susceptibility has been deduced for high temperature superconductors. The description can be written as ln ω 0 ω P B n h ac μ = A ( 1 − t P ) q . This description is in good agreement of the experiments in our melt-textured YBCO and Pb doped Hg-1234 ceramic superconductors. The values of the exponents are estimated to be q = 3 / 2 and n = 1 . And the comparison of our description with YBCO single crystal also sounds excellent.
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