LaSrCuAlO5: A new oxygen-deficient perovskite structure

J. B. Wiley; M. Sabat; S. J. Hwu; Kenneth R Poeppelmeier; A. Reller; T. Williams

doi:10.1016/0022-4596(90)90222-J

LaSrCuAlO₅: A new oxygen-deficient perovskite structure

J. B. Wiley, M. Sabat, S. J. Hwu, Kenneth R Poeppelmeier, A. Reller, T. Williams

Northwestern University

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

25 Citations (Scopus)

Abstract

A new oxygen-deficient perovskite, LaSrCuAlO₅, has been prepared. The compound crystallizes in the orthorhombic crystal system with the space group Pbcm. The unit cell dimensions (Z = 4) are a = 7.9219(6), b = 11.020(1), and c = 5.4235(4) Å. The compound is a layered copper oxide with a structure related to that of the mineral brownmillerite. Important structural features include buckled copper oxygen planes and nonmagnetic, insulating aluminum-oxygen chains that alternate with the copper oxygen planes along the 7.9-Å axis. Resistivity measurements show that LaSrCuAlO₅ is a semiconductor (ρ{variant}_{300 K} = 0.065 Ω cm) and magnetic susceptibility measurements demonstrate that the compound is paramagnetic down to 4 K.

Original language	English
Pages (from-to)	250-260
Number of pages	11
Journal	Journal of Solid State Chemistry
Volume	88
Issue number	1
DOIs	https://doi.org/10.1016/0022-4596(90)90222-J
Publication status	Published - 1990

ASJC Scopus subject areas

Inorganic Chemistry
Physical and Theoretical Chemistry
Materials Chemistry

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@article{2d75b86b4e1b4cfabc05a45110893350,

title = "LaSrCuAlO5: A new oxygen-deficient perovskite structure",

abstract = "A new oxygen-deficient perovskite, LaSrCuAlO5, has been prepared. The compound crystallizes in the orthorhombic crystal system with the space group Pbcm. The unit cell dimensions (Z = 4) are a = 7.9219(6), b = 11.020(1), and c = 5.4235(4) {\AA}. The compound is a layered copper oxide with a structure related to that of the mineral brownmillerite. Important structural features include buckled copper oxygen planes and nonmagnetic, insulating aluminum-oxygen chains that alternate with the copper oxygen planes along the 7.9-{\AA} axis. Resistivity measurements show that LaSrCuAlO5 is a semiconductor (ρ{variant}300 K = 0.065 Ω cm) and magnetic susceptibility measurements demonstrate that the compound is paramagnetic down to 4 K.",

author = "Wiley, {J. B.} and M. Sabat and Hwu, {S. J.} and Poeppelmeier, {Kenneth R} and A. Reller and T. Williams",

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T1 - LaSrCuAlO5

T2 - A new oxygen-deficient perovskite structure

AU - Wiley, J. B.

AU - Sabat, M.

AU - Hwu, S. J.

AU - Poeppelmeier, Kenneth R

AU - Reller, A.

AU - Williams, T.

PY - 1990

Y1 - 1990

N2 - A new oxygen-deficient perovskite, LaSrCuAlO5, has been prepared. The compound crystallizes in the orthorhombic crystal system with the space group Pbcm. The unit cell dimensions (Z = 4) are a = 7.9219(6), b = 11.020(1), and c = 5.4235(4) Å. The compound is a layered copper oxide with a structure related to that of the mineral brownmillerite. Important structural features include buckled copper oxygen planes and nonmagnetic, insulating aluminum-oxygen chains that alternate with the copper oxygen planes along the 7.9-Å axis. Resistivity measurements show that LaSrCuAlO5 is a semiconductor (ρ{variant}300 K = 0.065 Ω cm) and magnetic susceptibility measurements demonstrate that the compound is paramagnetic down to 4 K.

AB - A new oxygen-deficient perovskite, LaSrCuAlO5, has been prepared. The compound crystallizes in the orthorhombic crystal system with the space group Pbcm. The unit cell dimensions (Z = 4) are a = 7.9219(6), b = 11.020(1), and c = 5.4235(4) Å. The compound is a layered copper oxide with a structure related to that of the mineral brownmillerite. Important structural features include buckled copper oxygen planes and nonmagnetic, insulating aluminum-oxygen chains that alternate with the copper oxygen planes along the 7.9-Å axis. Resistivity measurements show that LaSrCuAlO5 is a semiconductor (ρ{variant}300 K = 0.065 Ω cm) and magnetic susceptibility measurements demonstrate that the compound is paramagnetic down to 4 K.

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