Site occupancy wave and unprecedented infinite zigzag (Te2-2)n chains in the flat Te nets of the new ternary rare earth telluride family ALn3Te8

Rhonda Patschke; Joy Heising; Jon Schindler; Carl R. Kannewurf; Mercouri Kanatzidis

doi:10.1006/jssc.1997.7606

Site occupancy wave and unprecedented infinite zigzag (Te^2-₂)_n chains in the flat Te nets of the new ternary rare earth telluride family ALn₃Te₈

Rhonda Patschke, Joy Heising, Jon Schindler, Carl R. Kannewurf, Mercouri Kanatzidis^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

The three isostructural compounds CsCe₃Te₈, RbCe₃Te₈, and KNd₃Te₈ were synthesized from the reaction of elemental copper and lanthanides in a molten alkali metal/polytelluride flux. They crystallize in the monoclinic space group P2₁/a (No. 14) with a = 9.057(2) Å, b = 12.996(3) Å, c = 14.840(3) Å, β= 98.74(2)°, V =1726.4(7) Å³, and Z= 4 for CsCe₃Te₈; a = 9.051(2) Å, b = 12.996(3) Å, c = 14.376(3) Å, β= 98.87(2)°, V = 1670.8(7) Å³, and Z= 4 for RbCe₃Te₈; and a = 8.956(1) Å, b = 12.836(2) Å, c = 13.856(3) Å, β= 99.42(1)°, V = 1571.3(3) Å³, and Z = 4 for KNd₃Te₈. The structure of all three compounds can be described as a defect NdTe₃ type, consisting of an anionic Ln₃Te₈ layer that is charge balanced with A⁺ cations. The anionic layer contains a square Te lattice net with an unprecedented ordered defect pattern site occupancy wave. Variable-temperature electrical conductivity and thermopower measurements are reported.

Original language	English (US)
Pages (from-to)	111-115
Number of pages	5
Journal	Journal of Solid State Chemistry
Volume	135
Issue number	1
DOIs	https://doi.org/10.1006/jssc.1997.7606
State	Published - Jan 1998

Keywords

Conductivity
Flux synthesis
Polytelluride
Rare earth
Thermopower

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1006/jssc.1997.7606

Cite this

@article{0cfc8a0762c54deabcae7dc063d7f410,

title = "Site occupancy wave and unprecedented infinite zigzag (Te2-2)n chains in the flat Te nets of the new ternary rare earth telluride family ALn3Te8",

abstract = "The three isostructural compounds CsCe3Te8, RbCe3Te8, and KNd3Te8 were synthesized from the reaction of elemental copper and lanthanides in a molten alkali metal/polytelluride flux. They crystallize in the monoclinic space group P21/a (No. 14) with a = 9.057(2) {\AA}, b = 12.996(3) {\AA}, c = 14.840(3) {\AA}, β= 98.74(2)°, V =1726.4(7) {\AA}3, and Z= 4 for CsCe3Te8; a = 9.051(2) {\AA}, b = 12.996(3) {\AA}, c = 14.376(3) {\AA}, β= 98.87(2)°, V = 1670.8(7) {\AA}3, and Z= 4 for RbCe3Te8; and a = 8.956(1) {\AA}, b = 12.836(2) {\AA}, c = 13.856(3) {\AA}, β= 99.42(1)°, V = 1571.3(3) {\AA}3, and Z = 4 for KNd3Te8. The structure of all three compounds can be described as a defect NdTe3 type, consisting of an anionic Ln3Te8 layer that is charge balanced with A+ cations. The anionic layer contains a square Te lattice net with an unprecedented ordered defect pattern site occupancy wave. Variable-temperature electrical conductivity and thermopower measurements are reported.",

keywords = "Conductivity, Flux synthesis, Polytelluride, Rare earth, Thermopower",

author = "Rhonda Patschke and Joy Heising and Jon Schindler and Kannewurf, {Carl R.} and Mercouri Kanatzidis",

note = "Funding Information: Financial support from the National Science Foundation (Grants DMR-9527347 (M.G.K.) and DMR-9622025 (C.R.K.)) is gratefully acknowledged. M.G.K. is a Henry Dreyfus Teacher—Scholar (1993—1998). This work made use of the SEM and TEM facilities of the Center for Electron Optics at Michigan State University.",

year = "1998",

month = jan,

doi = "10.1006/jssc.1997.7606",

language = "English (US)",

volume = "135",

pages = "111--115",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "1",

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TY - JOUR

T1 - Site occupancy wave and unprecedented infinite zigzag (Te2-2)n chains in the flat Te nets of the new ternary rare earth telluride family ALn3Te8

AU - Patschke, Rhonda

AU - Heising, Joy

AU - Schindler, Jon

AU - Kannewurf, Carl R.

AU - Kanatzidis, Mercouri

N1 - Funding Information: Financial support from the National Science Foundation (Grants DMR-9527347 (M.G.K.) and DMR-9622025 (C.R.K.)) is gratefully acknowledged. M.G.K. is a Henry Dreyfus Teacher—Scholar (1993—1998). This work made use of the SEM and TEM facilities of the Center for Electron Optics at Michigan State University.

PY - 1998/1

Y1 - 1998/1

N2 - The three isostructural compounds CsCe3Te8, RbCe3Te8, and KNd3Te8 were synthesized from the reaction of elemental copper and lanthanides in a molten alkali metal/polytelluride flux. They crystallize in the monoclinic space group P21/a (No. 14) with a = 9.057(2) Å, b = 12.996(3) Å, c = 14.840(3) Å, β= 98.74(2)°, V =1726.4(7) Å3, and Z= 4 for CsCe3Te8; a = 9.051(2) Å, b = 12.996(3) Å, c = 14.376(3) Å, β= 98.87(2)°, V = 1670.8(7) Å3, and Z= 4 for RbCe3Te8; and a = 8.956(1) Å, b = 12.836(2) Å, c = 13.856(3) Å, β= 99.42(1)°, V = 1571.3(3) Å3, and Z = 4 for KNd3Te8. The structure of all three compounds can be described as a defect NdTe3 type, consisting of an anionic Ln3Te8 layer that is charge balanced with A+ cations. The anionic layer contains a square Te lattice net with an unprecedented ordered defect pattern site occupancy wave. Variable-temperature electrical conductivity and thermopower measurements are reported.

AB - The three isostructural compounds CsCe3Te8, RbCe3Te8, and KNd3Te8 were synthesized from the reaction of elemental copper and lanthanides in a molten alkali metal/polytelluride flux. They crystallize in the monoclinic space group P21/a (No. 14) with a = 9.057(2) Å, b = 12.996(3) Å, c = 14.840(3) Å, β= 98.74(2)°, V =1726.4(7) Å3, and Z= 4 for CsCe3Te8; a = 9.051(2) Å, b = 12.996(3) Å, c = 14.376(3) Å, β= 98.87(2)°, V = 1670.8(7) Å3, and Z= 4 for RbCe3Te8; and a = 8.956(1) Å, b = 12.836(2) Å, c = 13.856(3) Å, β= 99.42(1)°, V = 1571.3(3) Å3, and Z = 4 for KNd3Te8. The structure of all three compounds can be described as a defect NdTe3 type, consisting of an anionic Ln3Te8 layer that is charge balanced with A+ cations. The anionic layer contains a square Te lattice net with an unprecedented ordered defect pattern site occupancy wave. Variable-temperature electrical conductivity and thermopower measurements are reported.

KW - Conductivity

KW - Flux synthesis

KW - Polytelluride

KW - Rare earth

KW - Thermopower

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