Synthesis of LiTiPO[sub 5] and LiTiAsO[sub 5] with the [alpha]-Fe[sub 2]PO[sub 5] structure
Journal Article
·
· Journal of Solid State Chemistry; (United States)
- Univ. of Aberdeen (United Kingdom)
The new phases LiTiPO[sub 5] and LiTiAsO[sub 5] have been synthesized by solid state reaction. They are essentially isostructural with [alpha]-Fe[sub 2]PO[sub 5], as confirmed by X-ray Rietveld refinement. The structures are built of chains of edge-sharing LiO[sub 6] octahedra cross-linked by chains of alternate corner-sharing PO[sub 4] tetrahedra and TiO[sub 6] octahedra (each of which shares common faces with two LiO[sub 6] octahedra). Unit cell dimensions: LiTiPO[sub 5], a = 7.4000(5) [angstrom], b = 6.3752(3) [angstrom], c = 7.2347(4) [angstrom]; LiTiAsO[sub 5], a = 7.5257(5) [angstrom], b = 6.5786(4) [angstrom], c = 7.4524(5) [angstrom]. Space group: Pnma. The phases melt incongruently at [approximately]1080[degrees]C and exhibit very low electrical conductivities, (5-10) [times] 10[sup [minus]6] S cm[sup [minus]1] at 400[degrees]C with activation energy [approximately]1 eV. Subsolidus phase diagrams for the systems Li[sub 2]O-TiO[sub 2]-P[sub 2]O[sub 5]/As[sub 2]O[sub 5] are presented.
- OSTI ID:
- 6882164
- Journal Information:
- Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 109:1; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALI METAL COMPOUNDS
ARSENIC COMPOUNDS
ARSENIC OXIDES
CHALCOGENIDES
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LITHIUM COMPOUNDS
LITHIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STUDIES
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
PHYSICAL PROPERTIES
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALI METAL COMPOUNDS
ARSENIC COMPOUNDS
ARSENIC OXIDES
CHALCOGENIDES
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LITHIUM COMPOUNDS
LITHIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STUDIES
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
PHYSICAL PROPERTIES
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS