La2o3-cuo-tio2 phase diagram and the crystal structure of [La0.86□0.14cu3](Ti3.42al0.58)O12

Mark T. Anderson; Vincent E. Balbarin; Dawn A. Groenke; Gordon A. Bain; Kenneth R. Poeppelmeier

doi:10.1006/jssc.1993.1094

La₂o₃-cuo-tio₂ phase diagram and the crystal structure of [La_0.86□_0.14cu₃](Ti_3.42al_0.58)O₁₂

Mark T. Anderson, Vincent E. Balbarin, Dawn A. Groenke, Gordon A. Bain, Kenneth R. Poeppelmeier^*

^*Corresponding author for this work

Chemistry

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

10 Scopus citations

Abstract

The La₂O₃-CuO-TiO₂ system in air at 960°C contains two perovskite-related ternary compounds, La₂CuTiO₆ and [La_2/3□_2/3Cu₃](Ti₄)O₁₂. The former is orthorhombic, has cell parameters a = 5.587(6), b = 5.616(5), c = 7.842(7) Å, is isostructural with GdFeO₃, and exhibits Curie-Weiss magnetic behavior. The copper and titanium are statistically distributed over one crystallographic site. The La₂O₃-CuO-TiO₂ and La₂O₃-CuO-SnO₂ systems differ in their phase relationships, number of ternary phases, and crystal chemistry of their La₂CuMO₆ (M = Ti, Sn) compounds. Single crystals of [La_0.86□_0.14Cu₃](Ti_3.42Al_0.58)O₁₂ were grown in an Al₂O₃ crucible from a CuO-TiO₂ flux and crystallize in the cubic space group /m3̄ with a = 7.421(1) Å and Z = 2. The compound is isostructural with [CaMn₃](Mn₄)O₁₂. The excess lanthanum in the crystal compensates the charge deficiency brought about by the aluminum incorporation, and the electrostatic stabilization it affords is the principal driving force for the observed structure.

Original language	English (US)
Pages (from-to)	216-227
Number of pages	12
Journal	Journal of Solid State Chemistry
Volume	103
Issue number	1
DOIs	https://doi.org/10.1006/jssc.1993.1094
State	Published - Mar 1993

ASJC Scopus subject areas

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

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10.1006/jssc.1993.1094

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@article{d48b08aa35e64e47b26bec295f2b84df,

title = "La2o3-cuo-tio2 phase diagram and the crystal structure of [La0.86□0.14cu3](Ti3.42al0.58)O12",

abstract = "The La2O3-CuO-TiO2 system in air at 960°C contains two perovskite-related ternary compounds, La2CuTiO6 and [La2/3□2/3Cu3](Ti4)O12. The former is orthorhombic, has cell parameters a = 5.587(6), b = 5.616(5), c = 7.842(7) {\AA}, is isostructural with GdFeO3, and exhibits Curie-Weiss magnetic behavior. The copper and titanium are statistically distributed over one crystallographic site. The La2O3-CuO-TiO2 and La2O3-CuO-SnO2 systems differ in their phase relationships, number of ternary phases, and crystal chemistry of their La2CuMO6 (M = Ti, Sn) compounds. Single crystals of [La0.86□0.14Cu3](Ti3.42Al0.58)O12 were grown in an Al2O3 crucible from a CuO-TiO2 flux and crystallize in the cubic space group /m{\=3} with a = 7.421(1) {\AA} and Z = 2. The compound is isostructural with [CaMn3](Mn4)O12. The excess lanthanum in the crystal compensates the charge deficiency brought about by the aluminum incorporation, and the electrostatic stabilization it affords is the principal driving force for the observed structure.",

author = "Anderson, {Mark T.} and Balbarin, {Vincent E.} and Groenke, {Dawn A.} and Bain, {Gordon A.} and Poeppelmeier, {Kenneth R.}",

year = "1993",

month = mar,

doi = "10.1006/jssc.1993.1094",

language = "English (US)",

volume = "103",

pages = "216--227",

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publisher = "Academic Press Inc.",

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T1 - La2o3-cuo-tio2 phase diagram and the crystal structure of [La0.86□0.14cu3](Ti3.42al0.58)O12

AU - Anderson, Mark T.

AU - Balbarin, Vincent E.

AU - Groenke, Dawn A.

AU - Bain, Gordon A.

AU - Poeppelmeier, Kenneth R.

PY - 1993/3

Y1 - 1993/3

N2 - The La2O3-CuO-TiO2 system in air at 960°C contains two perovskite-related ternary compounds, La2CuTiO6 and [La2/3□2/3Cu3](Ti4)O12. The former is orthorhombic, has cell parameters a = 5.587(6), b = 5.616(5), c = 7.842(7) Å, is isostructural with GdFeO3, and exhibits Curie-Weiss magnetic behavior. The copper and titanium are statistically distributed over one crystallographic site. The La2O3-CuO-TiO2 and La2O3-CuO-SnO2 systems differ in their phase relationships, number of ternary phases, and crystal chemistry of their La2CuMO6 (M = Ti, Sn) compounds. Single crystals of [La0.86□0.14Cu3](Ti3.42Al0.58)O12 were grown in an Al2O3 crucible from a CuO-TiO2 flux and crystallize in the cubic space group /m3̄ with a = 7.421(1) Å and Z = 2. The compound is isostructural with [CaMn3](Mn4)O12. The excess lanthanum in the crystal compensates the charge deficiency brought about by the aluminum incorporation, and the electrostatic stabilization it affords is the principal driving force for the observed structure.

AB - The La2O3-CuO-TiO2 system in air at 960°C contains two perovskite-related ternary compounds, La2CuTiO6 and [La2/3□2/3Cu3](Ti4)O12. The former is orthorhombic, has cell parameters a = 5.587(6), b = 5.616(5), c = 7.842(7) Å, is isostructural with GdFeO3, and exhibits Curie-Weiss magnetic behavior. The copper and titanium are statistically distributed over one crystallographic site. The La2O3-CuO-TiO2 and La2O3-CuO-SnO2 systems differ in their phase relationships, number of ternary phases, and crystal chemistry of their La2CuMO6 (M = Ti, Sn) compounds. Single crystals of [La0.86□0.14Cu3](Ti3.42Al0.58)O12 were grown in an Al2O3 crucible from a CuO-TiO2 flux and crystallize in the cubic space group /m3̄ with a = 7.421(1) Å and Z = 2. The compound is isostructural with [CaMn3](Mn4)O12. The excess lanthanum in the crystal compensates the charge deficiency brought about by the aluminum incorporation, and the electrostatic stabilization it affords is the principal driving force for the observed structure.

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La₂o₃-cuo-tio₂ phase diagram and the crystal structure of [La_0.86□_0.14cu₃](Ti_3.42al_0.58)O₁₂

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