COMPOSITIONAL VARIATIONS AND STRUCTURAL DISORDER IN THE BAMNO3-Y SYSTEM

Authors
PARRAS M ALONSO J GONZALEZCALBET JM VALLETREGI M
Citation
M. Parras et al., COMPOSITIONAL VARIATIONS AND STRUCTURAL DISORDER IN THE BAMNO3-Y SYSTEM, Solid state ionics, 63-5, 1993, pp. 614-619
Citations number
10
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
63-5
Year of publication
1993
Pages
614 - 619
Database
ISI
SICI code
0167-2738(1993)63-5:<614:CVASDI>2.0.ZU;2-9
Abstract
An electron diffraction and high resolution electron microscopy study of the BaMnO3-y system shows that in the reduction process of BaMnO3, the oxygen loss is accompanied with structural changes related to the introduction of cubic layers in the starting hexagonal close packing. Several ordered hexagonal types (2H, 15H, 8H, 6H, 1OH and 4H) can be o btained, for a given oxygen content, as a function of the synthetic ro ute. The synthesis and structural characterization of the 6H-type is d escribed.