On the structure and microstructure of 'PbCrO{sub 3}'

Journal Article · Thu Nov 15 00:00:00 EST 2007 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2007.09.017· OSTI ID:21043752

Arevalo-Lopez, Angel M ^[1]

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1. Departamento de Quimica Inorganica, Facultad de Quimicas, Universidad Complutense de Madrid, 28040 Madrid (Spain)

The reliability factors of a Rietveld X-ray powder refinement of PbCrO{sub 3} could be improved by considering the lead ion in a multi-minimum potential displaced from its special position. These studies coupled to EDX analysis show a certain lead deficiency. Electron diffraction and high-resolution electron microscopy reveal that the microstructure of this material is a rather complex perovskite superstructure that presents a compositional modulation, within a microdomain distribution. The proposed supercell is {approx}a{sub p}x3a{sub p}x({approx}14-18)a{sub p}. - Graphical abstract: Model of the structure of PbCrO{sub 3} obtained by electron microscopy and diffraction.

• OSTI ID: 21043752
• Journal Information: Journal of Solid State Chemistry, Vol. 180, Issue 11; Other Information: DOI: 10.1016/j.jssc.2007.09.017; PII: S0022-4596(07)00386-6; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATIONS
CHROMATES
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
LEAD COMPOUNDS
LEAD IONS
MICROSTRUCTURE
PEROVSKITE
RELIABILITY
X RADIATION