The perovskite Ba(Bi sub 1-x Li sub x )O sub 3-y : A new type of cation order for x = 0. 25, Ba sub 4 Bi sub 3 LiO sub 11

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(90)90186-2· OSTI ID:6658410

Greaves, C; Katib, S M.A. ^[1]

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1. Univ. of Birmingham (England)

The structural properties of the perovskite system Ba(Bi{sub 1-x}Li{sub x})O{sub 3-Y} have been investigated for 0.0 < x < 0.25. Over this composition range, the nominal Bi oxidation state varies between +4 and +4.33 and no superconducting properties were observed. The Li-rich end member of this series, Ba{sub 4}Bi{sub 3}LiO{sub 11}, exhibits a new type of superstructure due to cation order in the octahedral sites - tetragonal P4/mmm, Z = 1, a = 6.101(1), b = 8.628(2) {angstrom}. The ordered structure is different from that observed for the analogous Ba{sub 4}M{sub 3}LiO{sub 12} phases where M = Sb, Nb, Ta, and possible reasons for this are discussed. In particular, the structures of the Sb and Bi phases are compared in detail using Madelung energy calculations.

• OSTI ID: 6658410
• Journal Information: Journal of Solid State Chemistry; (USA), Vol. 84:1; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
CRYSTAL STRUCTURE
BISMUTH
DATA ANALYSIS
EXPERIMENTAL DATA
LITHIUM
MEASURING INSTRUMENTS
MEASURING METHODS
PEROVSKITE
SUPERCONDUCTING COMPOSITES
ALKALI METALS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
DATA
ELEMENTS
INFORMATION
MATERIALS
METALS
MINERALS
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
&amp; Refractories- Structure &amp; Phase Studies
360204 - Ceramics
Cermets
&amp; Refractories- Physical Properties