Abstract
We have synthesized a new perovskite-type compound with nominal composition CaPbO3 under about 6 GPa using a cubic-anvil-type apparatus from a mixed powder of high-purity CaO and PbO2. The XRD pattern was indexed on the basis of an orthorhombic unit cell with a = 5.667(1) Å, b = 5.879(1) Å and c = 8.147(2) Å. This compound has a distorted perovskite-type structure, while two previously reported types of CaPbO3 have a fluorite-type structure and an ilmenate-type structure. EDX analysis and the unit cell parameters suggest a deficiency in the Ca site. The electrical resistivity of this compound at room temperature was very high ( > 105 Ω cm) in contrast to the metallic and semiconducting conductivity of BaPbO3 and SrPbO3, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 333-336 |
| Number of pages | 4 |
| Journal | Solid State Ionics |
| Volume | 108 |
| Issue number | 1-4 |
| Publication status | Published - 1998 May 1 |
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Keywords
- Ca-Pb-O
- Crystal structure
- High-pressure synthesis
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
Cite this
Yamamoto, A., Khasanova, N., Wu, X. J., & Tanabe, K. (1998). Synthesis and characterization of perovskite-type CaPbO3. Solid State Ionics, 108(1-4), 333-336.