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

Research output: Contribution to journalArticle

11 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)2635-2638
Number of pages4
JournalJournal of Solid State Chemistry
Volume177
Issue number7
DOIs
StatePublished - Jul 1 2004

Fingerprint

metathesis
Perovskite
synthesis
Rietveld refinement
Solid state reactions
Powders
Oxides
Magnetization
routes
Air
solid state
magnetization
oxides
perovskite
air
Temperature

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

Cite this

@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",
year = "2004",
month = "7",
day = "1",
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",

}

Transforming n=1 members of the Ruddlesden-Popper phases to a n=3 member through metathesis : Synthesis of a new layered perovskite, Ca2La 2CuTi2O10. / Sivakumar, T.; Lofland, S. E.; Ramanujachary, K. V.; Ramesha, K.; Subbanna, G. N.; Gopalakrishnan, J.

In: Journal of Solid State Chemistry, Vol. 177, No. 7, 01.07.2004, p. 2635-2638.

Research output: Contribution to journalArticle

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.

PY - 2004/7/1

Y1 - 2004/7/1

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.

UR - http://www.scopus.com/inward/record.url?scp=2942640130&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2942640130&partnerID=8YFLogxK

U2 - 10.1016/j.jssc.2004.03.030

DO - 10.1016/j.jssc.2004.03.030

M3 - Article

AN - SCOPUS:2942640130

VL - 177

SP - 2635

EP - 2638

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

SN - 0022-4596

IS - 7

ER -