Synthesis and structure of LaSr2CuTiO6.5

A new oxygen-deficient Ruddlesden-Popper phase

Gregory M. Sarjeant, Kevin B. Greenwood, Kenneth R Poeppelmeier, Hong Zhang, Paul A. Salvador, Thomas O Mason, Laurence D. Marks

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The structure of LaSr2CuTiO6.5, a novel (ABO3)nAO n = 2 Ruddlesden-Popper phase, has been solved by powder X-ray diffraction and electron microscopy. The diffraction patterns are consistent with I4/mmm symmetry, with tetragonal lattice parameters a = 3.8816(1) Å and c = 20.296(2) Å. The structure of LaSr2CuTiO6.5 is similar to Sr3Ti2O7, with copper and titanium disordered over the single B-cation site, and lanthanum and strontium almost perfectly disordered over the two A-cation sites. The oxygen content, determined by thermogravimetric reduction to be 6.5 (±0.1), is consistent with divalent copper with the oxygen vacancies distributed within the perovskite layers. The absence of local order and strategies for inducing a layered arrangement of the B-cations are discussed.

Original languageEnglish
Pages (from-to)2792-2798
Number of pages7
JournalChemistry of Materials
Volume8
Issue number12
Publication statusPublished - Dec 1996

Fingerprint

Cations
Positive ions
Oxygen
Copper
Lanthanum
Strontium
Oxygen vacancies
Titanium
Perovskite
X ray powder diffraction
Diffraction patterns
Electron microscopy
Lattice constants
perovskite

ASJC Scopus subject areas

  • Materials Science(all)
  • Materials Chemistry

Cite this

Sarjeant, G. M., Greenwood, K. B., Poeppelmeier, K. R., Zhang, H., Salvador, P. A., Mason, T. O., & Marks, L. D. (1996). Synthesis and structure of LaSr2CuTiO6.5: A new oxygen-deficient Ruddlesden-Popper phase. Chemistry of Materials, 8(12), 2792-2798.

Synthesis and structure of LaSr2CuTiO6.5 : A new oxygen-deficient Ruddlesden-Popper phase. / Sarjeant, Gregory M.; Greenwood, Kevin B.; Poeppelmeier, Kenneth R; Zhang, Hong; Salvador, Paul A.; Mason, Thomas O; Marks, Laurence D.

In: Chemistry of Materials, Vol. 8, No. 12, 12.1996, p. 2792-2798.

Research output: Contribution to journalArticle

Sarjeant, GM, Greenwood, KB, Poeppelmeier, KR, Zhang, H, Salvador, PA, Mason, TO & Marks, LD 1996, 'Synthesis and structure of LaSr2CuTiO6.5: A new oxygen-deficient Ruddlesden-Popper phase', Chemistry of Materials, vol. 8, no. 12, pp. 2792-2798.
Sarjeant, Gregory M. ; Greenwood, Kevin B. ; Poeppelmeier, Kenneth R ; Zhang, Hong ; Salvador, Paul A. ; Mason, Thomas O ; Marks, Laurence D. / Synthesis and structure of LaSr2CuTiO6.5 : A new oxygen-deficient Ruddlesden-Popper phase. In: Chemistry of Materials. 1996 ; Vol. 8, No. 12. pp. 2792-2798.
@article{1cc7e3433051436694d81905c7aa9f76,
title = "Synthesis and structure of LaSr2CuTiO6.5: A new oxygen-deficient Ruddlesden-Popper phase",
abstract = "The structure of LaSr2CuTiO6.5, a novel (ABO3)nAO n = 2 Ruddlesden-Popper phase, has been solved by powder X-ray diffraction and electron microscopy. The diffraction patterns are consistent with I4/mmm symmetry, with tetragonal lattice parameters a = 3.8816(1) {\AA} and c = 20.296(2) {\AA}. The structure of LaSr2CuTiO6.5 is similar to Sr3Ti2O7, with copper and titanium disordered over the single B-cation site, and lanthanum and strontium almost perfectly disordered over the two A-cation sites. The oxygen content, determined by thermogravimetric reduction to be 6.5 (±0.1), is consistent with divalent copper with the oxygen vacancies distributed within the perovskite layers. The absence of local order and strategies for inducing a layered arrangement of the B-cations are discussed.",
author = "Sarjeant, {Gregory M.} and Greenwood, {Kevin B.} and Poeppelmeier, {Kenneth R} and Hong Zhang and Salvador, {Paul A.} and Mason, {Thomas O} and Marks, {Laurence D.}",
year = "1996",
month = "12",
language = "English",
volume = "8",
pages = "2792--2798",
journal = "Chemistry of Materials",
issn = "0897-4756",
publisher = "American Chemical Society",
number = "12",

}

TY - JOUR

T1 - Synthesis and structure of LaSr2CuTiO6.5

T2 - A new oxygen-deficient Ruddlesden-Popper phase

AU - Sarjeant, Gregory M.

AU - Greenwood, Kevin B.

AU - Poeppelmeier, Kenneth R

AU - Zhang, Hong

AU - Salvador, Paul A.

AU - Mason, Thomas O

AU - Marks, Laurence D.

PY - 1996/12

Y1 - 1996/12

N2 - The structure of LaSr2CuTiO6.5, a novel (ABO3)nAO n = 2 Ruddlesden-Popper phase, has been solved by powder X-ray diffraction and electron microscopy. The diffraction patterns are consistent with I4/mmm symmetry, with tetragonal lattice parameters a = 3.8816(1) Å and c = 20.296(2) Å. The structure of LaSr2CuTiO6.5 is similar to Sr3Ti2O7, with copper and titanium disordered over the single B-cation site, and lanthanum and strontium almost perfectly disordered over the two A-cation sites. The oxygen content, determined by thermogravimetric reduction to be 6.5 (±0.1), is consistent with divalent copper with the oxygen vacancies distributed within the perovskite layers. The absence of local order and strategies for inducing a layered arrangement of the B-cations are discussed.

AB - The structure of LaSr2CuTiO6.5, a novel (ABO3)nAO n = 2 Ruddlesden-Popper phase, has been solved by powder X-ray diffraction and electron microscopy. The diffraction patterns are consistent with I4/mmm symmetry, with tetragonal lattice parameters a = 3.8816(1) Å and c = 20.296(2) Å. The structure of LaSr2CuTiO6.5 is similar to Sr3Ti2O7, with copper and titanium disordered over the single B-cation site, and lanthanum and strontium almost perfectly disordered over the two A-cation sites. The oxygen content, determined by thermogravimetric reduction to be 6.5 (±0.1), is consistent with divalent copper with the oxygen vacancies distributed within the perovskite layers. The absence of local order and strategies for inducing a layered arrangement of the B-cations are discussed.

UR - http://www.scopus.com/inward/record.url?scp=2842560529&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2842560529&partnerID=8YFLogxK

M3 - Article

VL - 8

SP - 2792

EP - 2798

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 12

ER -