V2O3 was incorporated into polymer matrices to produce composite materials with low room‐temperature resistivities and sizable positive temperature coefficient (PTC) resistance effects. In addition, a negative temperature coefficient effect, associated with the semiconductor‐to‐metal phase transition in V2O3, was also observed. The resistivity vs temperature curve for these composites resembles a square well with three temperature regimes in which the composite behaves like a semiconductor, a metal, and an insulator. The intensity of the PTC effect for these composites was found to be as large as 10 orders of magnitude.
|Original language||English (US)|
|Number of pages||3|
|Journal||Journal of the American Ceramic Society|
|Publication status||Published - Jan 1 1987|
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry