Abstract
A charge‐up image was observed in the intergranular phases of semiconducting BaTiO3 positive temperature coefficient of resistivity (PTCR) ceramics when the ceramic specimens were heated to the Curie temperature in a scanning electron microscope. Experiments showed that this image was caused by intense secondary electron emission localized in the phases. This charge‐up state seemed to be closely related to the PTCR mechanism.
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Schedule a callMore From: Journal of the American Ceramic Society. American Ceramic Society
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