The spatial inhomogeneity of the electrical characteristics of high-Tcthin films was studied by optical laser probing.It was shown that the characteristic length L of inhomogeneous current distribution in high-T films may be much larger than the grain size a, e.g. film with critical current densities j(422KY -103-104A/cm2 and grain size a-1pm the chaPacteristic length L was equal to -15pm at T>T and -1OOpm at T
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