| Popis: |
Perovskite-structure thick films, in which x is 0.4 or 0.6, were prepared by normal ceramic process on alumina substrate. Electrical resistance was measured as a function of thermal treatment condition including atmosphere, time, and temperature. The resistance of films is lower than those of or films. The temperature coefficient of resistance over was measured to be 0 for the films after thermal treatment at in air. The sensing property of the films was also measured as a function of temperature and gas such as , CO, , NO and . films showed a good sensing property for , but no sensing signal for CO, , NO and . |
