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ChemInform Abstract: Crystal Structure and Its Role in Electrical Properties of the Perovskite CaPbO3 Synthesized at High Pressure.

✍ Scribed by A. Yamamoto; N. R. Khasanova; F. Izumi; X.-J. Wu; T. Kamiyama; S. Torii; S. Tajima

Publisher: John Wiley and Sons
Year: 2010
Weight: 32 KB
Volume: 30
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199921015

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✦ Synopsis

Crystal Structure and Its Role in Electrical Properties of the Perovskite CaPbO 3 Synthesized at High Pressure. -The title compound is prepared via an optimized synthetic route. The reaction of the Ca 2 PbO 4 precursor with PbO 2 (1000 • C, 5 GPa, 1 h) affords the orthorhombic modification of CaPbO 3 . This form of CaPbO 3 is isotypic to SrPbO 3 with the distorted perovskite-type structure of the GdFeO 3 type. The title compound crystallizes in the space group Pbnm with Z = 4 (neutron powder diffraction). The compound is an electrical insulator, which is in sharp contrast to the electrical behavior of BaPbO 3 and SrPbO 3 .

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