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Ageing phenomena in NTC thermistors based on copper-nickel-cobalt manganite electroceramics under thermal exposure at 125 and 170 o C during 1000 h are studied. The observed relative resistance drift is compared with the results of XRD, ceramics microstructure characterization (optical microscopy, SEM), electron probe microanalysis, as well as thermogravimetry measurements. It is shown, at...
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