Abstract
The effect of the composition on the electrical properties of BaBi 1− x Sb x O 3 (0 ≤ x ≤ 0.5) negative temperature coefficient (NTC) thermistors was studied. Major phases present in the sintered bodies of BaBi 1− x Sb x O 3 (0 < x < 0.5) ceramics were BaBi 0.5Sb 0.5O 3 compounds with a rhombohedral structure and BaBiO 3 compounds with a monoclinal structure. Most pores were located in the grains of BaBiO 3 and BaBi 0.5Sb 0.5O 3 ceramics. It was apparent that the ρ 25 and B 25/85 constant of the thermistors increased with increasing Sb content.
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