Transforming n=1 members of the Ruddlesden-Popper phases to a n=3 member through metathesis: Synthesis of a new layered perovskite, Ca2La 2CuTi2O10

T. Sivakumar; S. E. Lofland; K. V. Ramanujachary; K. Ramesha; G. N. Subbanna; J. Gopalakrishnan

doi:10.1016/j.jssc.2004.03.030

Transforming n=1 members of the Ruddlesden-Popper phases to a n=3 member through metathesis: Synthesis of a new layered perovskite, Ca₂La ₂CuTi₂O₁₀

T. Sivakumar, S. E. Lofland, K. V. Ramanujachary, K. Ramesha, G. N. Subbanna, J. Gopalakrishnan

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Abstract

We report the formation of a new n=3 Ruddlesden-Popper (R-P) layered perovskite oxide, Ca₂La₂CuTi₂O₁₀ (I), in the metathesis reaction between NaLaTiO₄ and Ca ₂CuO₂Cl₂ (n=1 R-P phases) at 700°C in air. Rietveld refinement of powder XRD data shows that I is isostructural with Sr₄Ti₃O₁₀ (space group I4/mmm; a=3.8837(5), c=27.727(6)Å), consisting of triple perovskite CuTi₂O ₁₀ sheets wherein Cu and Ti are ordered at the central and terminal octahedral sites, respectively. Magnetization data provide support for the presence of strong antiferromagnetically coupled CuO₂ sheets in the structure. I is metastable decomposing at higher temperatures (∼950°C) to a mixture of perovskite-like CaLa₂CuTi₂O₉ and CaO. Interestingly, the reaction between NaLaTiO₄ and Sr ₂CuO₂Cl₂ follows a different metathesis route, 2NaLaTiO₄+Sr₂CuO₂Cl₂→La ₂CuO₄+2SrTiO₃+2NaCl, revealing multiplicity of reaction pathways for solid-state metathesis reactions.

Original language	English (US)
Pages (from-to)	2635-2638
Number of pages	4
Journal	Journal of Solid State Chemistry
Volume	177
Issue number	7
DOIs	https://doi.org/10.1016/j.jssc.2004.03.030
State	Published - Jul 2004

All Science Journal Classification (ASJC) codes

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

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10.1016/j.jssc.2004.03.030

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@article{e6e4a5061f474d4dad9c65dadf808093,

title = "Transforming n=1 members of the Ruddlesden-Popper phases to a n=3 member through metathesis: Synthesis of a new layered perovskite, Ca2La 2CuTi2O10",

abstract = "We report the formation of a new n=3 Ruddlesden-Popper (R-P) layered perovskite oxide, Ca2La2CuTi2O10 (I), in the metathesis reaction between NaLaTiO4 and Ca 2CuO2Cl2 (n=1 R-P phases) at 700°C in air. Rietveld refinement of powder XRD data shows that I is isostructural with Sr4Ti3O10 (space group I4/mmm; a=3.8837(5), c=27.727(6){\AA}), consisting of triple perovskite CuTi2O 10 sheets wherein Cu and Ti are ordered at the central and terminal octahedral sites, respectively. Magnetization data provide support for the presence of strong antiferromagnetically coupled CuO2 sheets in the structure. I is metastable decomposing at higher temperatures (∼950°C) to a mixture of perovskite-like CaLa2CuTi2O9 and CaO. Interestingly, the reaction between NaLaTiO4 and Sr 2CuO2Cl2 follows a different metathesis route, 2NaLaTiO4+Sr2CuO2Cl2→La 2CuO4+2SrTiO3+2NaCl, revealing multiplicity of reaction pathways for solid-state metathesis reactions.",

author = "T. Sivakumar and Lofland, {S. E.} and Ramanujachary, {K. V.} and K. Ramesha and Subbanna, {G. N.} and J. Gopalakrishnan",

note = "Funding Information: We thank the Council of Scientific and Industrial Research, Government of India, New Delhi for support of this research work. SEL and KVR acknowledge the support of the New Jersey Commission on Higher Education. ",

year = "2004",

month = jul,

doi = "10.1016/j.jssc.2004.03.030",

language = "English (US)",

volume = "177",

pages = "2635--2638",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "7",

}

TY - JOUR

T1 - Transforming n=1 members of the Ruddlesden-Popper phases to a n=3 member through metathesis

T2 - Synthesis of a new layered perovskite, Ca2La 2CuTi2O10

AU - Sivakumar, T.

AU - Lofland, S. E.

AU - Ramanujachary, K. V.

AU - Ramesha, K.

AU - Subbanna, G. N.

AU - Gopalakrishnan, J.

N1 - Funding Information: We thank the Council of Scientific and Industrial Research, Government of India, New Delhi for support of this research work. SEL and KVR acknowledge the support of the New Jersey Commission on Higher Education.

PY - 2004/7

Y1 - 2004/7

N2 - We report the formation of a new n=3 Ruddlesden-Popper (R-P) layered perovskite oxide, Ca2La2CuTi2O10 (I), in the metathesis reaction between NaLaTiO4 and Ca 2CuO2Cl2 (n=1 R-P phases) at 700°C in air. Rietveld refinement of powder XRD data shows that I is isostructural with Sr4Ti3O10 (space group I4/mmm; a=3.8837(5), c=27.727(6)Å), consisting of triple perovskite CuTi2O 10 sheets wherein Cu and Ti are ordered at the central and terminal octahedral sites, respectively. Magnetization data provide support for the presence of strong antiferromagnetically coupled CuO2 sheets in the structure. I is metastable decomposing at higher temperatures (∼950°C) to a mixture of perovskite-like CaLa2CuTi2O9 and CaO. Interestingly, the reaction between NaLaTiO4 and Sr 2CuO2Cl2 follows a different metathesis route, 2NaLaTiO4+Sr2CuO2Cl2→La 2CuO4+2SrTiO3+2NaCl, revealing multiplicity of reaction pathways for solid-state metathesis reactions.

AB - We report the formation of a new n=3 Ruddlesden-Popper (R-P) layered perovskite oxide, Ca2La2CuTi2O10 (I), in the metathesis reaction between NaLaTiO4 and Ca 2CuO2Cl2 (n=1 R-P phases) at 700°C in air. Rietveld refinement of powder XRD data shows that I is isostructural with Sr4Ti3O10 (space group I4/mmm; a=3.8837(5), c=27.727(6)Å), consisting of triple perovskite CuTi2O 10 sheets wherein Cu and Ti are ordered at the central and terminal octahedral sites, respectively. Magnetization data provide support for the presence of strong antiferromagnetically coupled CuO2 sheets in the structure. I is metastable decomposing at higher temperatures (∼950°C) to a mixture of perovskite-like CaLa2CuTi2O9 and CaO. Interestingly, the reaction between NaLaTiO4 and Sr 2CuO2Cl2 follows a different metathesis route, 2NaLaTiO4+Sr2CuO2Cl2→La 2CuO4+2SrTiO3+2NaCl, revealing multiplicity of reaction pathways for solid-state metathesis reactions.

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U2 - 10.1016/j.jssc.2004.03.030

DO - 10.1016/j.jssc.2004.03.030

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AN - SCOPUS:2942640130

SN - 0022-4596

VL - 177

SP - 2635

EP - 2638

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 7

ER -

Transforming n=1 members of the Ruddlesden-Popper phases to a n=3 member through metathesis: Synthesis of a new layered perovskite, Ca₂La ₂CuTi₂O₁₀

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