1. Electrical and stability characteristics of BaPbO3 ceramics
- Author
-
Shen-Li Fu and Yu-Hung Hsieh
- Subjects
Phase transition ,Materials science ,Moisture ,Process Chemistry and Technology ,Analytical chemistry ,Mineralogy ,Metallic conduction ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Atomic orbital ,visual_art ,Materials Chemistry ,Ceramics and Composites ,visual_art.visual_art_medium ,Cell structure ,Ceramic - Abstract
BaPbO 3 ceramics are fabricated with BaCO 3 and PbO powders. Phase transitions and the physical properties of BaPbO 3 fabricated with different Pb/Ba mole ratios are studied. The metallic conduction behavior of BaPbO 3 can be understood by either the unfilled d orbital of Pb 4+ or the substitution of Ba by Pb. However, the model of a unit cell structure with PbO 2 layers ‘inserted’ between BaO layers together with unfilled d orbital of Pb 4+ seems more appropriate. BaPbO 3 is also proved to be stable in water, but not so stable in the presence of both water and air (moisture). Increasing the Pb content can improve the resistance of BaPbO 3 to moisture.
- Published
- 1992
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