Positive temperature coefficient of resistance PTCR

The problem of reducing sintering temperature is also crucial for Bao sSrg sTiOj, which possesses ferroelectric properties but is used more often as a material with a positive temperature coefficient of resistance (PTCR). The citrate synthesis method is often considered as an alternative to freeze-drying synthesis, but in the following case the solution of barium, strontium, and titanium citrates was dried by various methods (i.e., oven drying and freeze-drying). Careful... 

PTCR. Positive temperature coefficient of resistance. Ceramics with PTCR s include barium titanates. 

The PTCR effect refers to anomalies observable in some semiconductors or ionic conductors, in that the resistivity increases significantly with the temperature (PTCR = positive temperature coefficient of the resistance). Trivial but powerful PTCR effects rely on composites of insulating... 

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