Synthesis of LiTiPO5 and LiTiAsO5 with the α-Fe2PO5 structure

A. Robertson; J. F. Fletcher; J. M. S. Skakle; A. R. West

doi:10.1006/jssc.1994.1070

Synthesis of LiTiPO5 and LiTiAsO5 with the α-Fe2PO5 structure

A. Robertson, J. F. Fletcher, J. M. S. Skakle, A. R. West

Academic Development

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Abstract

The new phases LiTiPO5 and LiTiAsO5 have been synthesized by solid state reaction. They are essentially isostructural with α-Fe2PO5, as confirmed by X-ray Rietveld refinement. The structures are built of chains of edge-sharing LiO6 octahedra cross-linked by chains of alternate corner-sharing PO4 tetrahedra and TiO6 octahedra (each of which shares common faces with two LiO6 octahedra). Unit cell dimensions: LiTiPO5, a = 7.4000(5) Å, b = 6.3752(3) Å, c = 7.2347(4) Å; LiTiAsO5, a = 7.5257(5) Å, b = 6.5786(4) Å, c = 7.4524(5) Å. Space group: Pnma. The phases melt incongruently at ∼1080°C and exhibit very low electrical conductivities, (5-10) × 10-6 S cm-1 at 400°C with activation energy ∼1 eV. Subsolidus phase diagrams for the systems Li2O-TiO2-P2O5/As2O5 are presented.

Original language	English
Pages (from-to)	53-59
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	109
Issue number	1
DOIs	https://doi.org/10.1006/jssc.1994.1070
Publication status	Published - 1 Mar 1994

Keywords

solid state reaction
LiTiPO5
LiTiAsO5

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10.1006/jssc.1994.1070

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@article{5e26e923c85f4ee8914671ba959f62b4,

title = "Synthesis of LiTiPO5 and LiTiAsO5 with the α-Fe2PO5 structure",

abstract = "The new phases LiTiPO5 and LiTiAsO5 have been synthesized by solid state reaction. They are essentially isostructural with α-Fe2PO5, as confirmed by X-ray Rietveld refinement. The structures are built of chains of edge-sharing LiO6 octahedra cross-linked by chains of alternate corner-sharing PO4 tetrahedra and TiO6 octahedra (each of which shares common faces with two LiO6 octahedra). Unit cell dimensions: LiTiPO5, a = 7.4000(5) {\AA}, b = 6.3752(3) {\AA}, c = 7.2347(4) {\AA}; LiTiAsO5, a = 7.5257(5) {\AA}, b = 6.5786(4) {\AA}, c = 7.4524(5) {\AA}. Space group: Pnma. The phases melt incongruently at ∼1080°C and exhibit very low electrical conductivities, (5-10) × 10-6 S cm-1 at 400°C with activation energy ∼1 eV. Subsolidus phase diagrams for the systems Li2O-TiO2-P2O5/As2O5 are presented.",

keywords = "solid state reaction, LiTiPO5, LiTiAsO5",

author = "A. Robertson and Fletcher, {J. F.} and Skakle, {J. M. S.} and West, {A. R.}",

year = "1994",

month = mar,

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doi = "10.1006/jssc.1994.1070",

language = "English",

volume = "109",

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TY - JOUR

T1 - Synthesis of LiTiPO5 and LiTiAsO5 with the α-Fe2PO5 structure

AU - Robertson, A.

AU - Fletcher, J. F.

AU - Skakle, J. M. S.

AU - West, A. R.

PY - 1994/3/1

Y1 - 1994/3/1

N2 - The new phases LiTiPO5 and LiTiAsO5 have been synthesized by solid state reaction. They are essentially isostructural with α-Fe2PO5, as confirmed by X-ray Rietveld refinement. The structures are built of chains of edge-sharing LiO6 octahedra cross-linked by chains of alternate corner-sharing PO4 tetrahedra and TiO6 octahedra (each of which shares common faces with two LiO6 octahedra). Unit cell dimensions: LiTiPO5, a = 7.4000(5) Å, b = 6.3752(3) Å, c = 7.2347(4) Å; LiTiAsO5, a = 7.5257(5) Å, b = 6.5786(4) Å, c = 7.4524(5) Å. Space group: Pnma. The phases melt incongruently at ∼1080°C and exhibit very low electrical conductivities, (5-10) × 10-6 S cm-1 at 400°C with activation energy ∼1 eV. Subsolidus phase diagrams for the systems Li2O-TiO2-P2O5/As2O5 are presented.

AB - The new phases LiTiPO5 and LiTiAsO5 have been synthesized by solid state reaction. They are essentially isostructural with α-Fe2PO5, as confirmed by X-ray Rietveld refinement. The structures are built of chains of edge-sharing LiO6 octahedra cross-linked by chains of alternate corner-sharing PO4 tetrahedra and TiO6 octahedra (each of which shares common faces with two LiO6 octahedra). Unit cell dimensions: LiTiPO5, a = 7.4000(5) Å, b = 6.3752(3) Å, c = 7.2347(4) Å; LiTiAsO5, a = 7.5257(5) Å, b = 6.5786(4) Å, c = 7.4524(5) Å. Space group: Pnma. The phases melt incongruently at ∼1080°C and exhibit very low electrical conductivities, (5-10) × 10-6 S cm-1 at 400°C with activation energy ∼1 eV. Subsolidus phase diagrams for the systems Li2O-TiO2-P2O5/As2O5 are presented.

KW - solid state reaction

KW - LiTiPO5

KW - LiTiAsO5

U2 - 10.1006/jssc.1994.1070

DO - 10.1006/jssc.1994.1070

M3 - Article

SN - 0022-4596

VL - 109

SP - 53

EP - 59

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 1

ER -

Synthesis of LiTiPO5 and LiTiAsO5 with the α-Fe2PO5 structure

Abstract

Keywords

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