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VOLUME 47 (1988) | ISSUE 5 | PAGE 257
Thermal-electrical domain in Y-Ba-Cu-O ceramic and its analogs
As a current flows through a sample of a Y-Ba-Cu-O ceramic or one of its analogs, a region with local increases in the temperature and the resistance appears (a thermal-electrical domain). In the direct-current case, this domain is observed to drift. The drift direction depends on the polarity of the current.