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 |
| Externally published | Yes |
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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
Synthesis and characterization of perovskite-type CaPbO3 . / Yamamoto, Ayako; Khasanova, Nellie; Wu, Xiao Jing; Tanabe, Keiichi.
In: Solid State Ionics, Vol. 108, No. 1-4, 01.05.1998, p. 333-336.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis and characterization of perovskite-type CaPbO3
AU - Yamamoto, Ayako
AU - Khasanova, Nellie
AU - Wu, Xiao Jing
AU - Tanabe, Keiichi
PY - 1998/5/1
Y1 - 1998/5/1
N2 - 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.
AB - 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.
KW - Ca-Pb-O
KW - Crystal structure
KW - High-pressure synthesis
UR - http://www.scopus.com/inward/record.url?scp=0032074473&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032074473&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0032074473
VL - 108
SP - 333
EP - 336
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
IS - 1-4
ER -