Structure and magnetism in the oxygen-deficient perovskites Ce 1-xSrxCoO3-δ (x ≥ 0.90)

M. James; K. S. Wallwork; R. L. Withers; D. J. Goossens; K. F. Wilson; J. Horvat; X. L. Wang; M. Colella

doi:10.1016/j.materresbull.2005.03.025

Structure and magnetism in the oxygen-deficient perovskites Ce _1-xSr_xCoO_3-δ (x ≥ 0.90)

M. James^*
, K. S. Wallwork
, R. L. Withers
, D. J. Goossens
, K. F. Wilson
, J. Horvat
, X. L. Wang
, M. Colella

^*Corresponding author for this work

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

19 Citations (Scopus)

Abstract

We have examined the structure and phase behaviour of strontium-doped Ce_1-xSr_xCoO_3-δ and found that the perovskite form is stabilised over a relatively narrow solid solution range (x > 0.85). A combination of electron, powder X-ray and neutron diffraction has revealed tetragonal superstructures of the basic perovskite unit; (I4/mmm) 2a_p × 2a_p × 4a_p (x = 0.90) and (P4/mmm) a_p × a_p × 2a_p (x = 0.95). Magnetisation measurements show ferromagnetic behaviour under applied magnetic fields. Low temperature neutron diffraction of Ce_0.10Sr _0.90CoO_2.80 in zero field reveals a magnetic cell of dimension 2a_p × 2a_p × 4a_p with an ordered cobalt moment of 1.7 B.M. at 25 K.

Original language	English
Pages (from-to)	1415-1431
Number of pages	17
Journal	Materials Research Bulletin
Volume	40
Issue number	8
DOIs	https://doi.org/10.1016/j.materresbull.2005.03.025
Publication status	Published - 11 Aug 2005

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title = "Structure and magnetism in the oxygen-deficient perovskites Ce 1-xSrxCoO3-δ (x ≥ 0.90)",

abstract = "We have examined the structure and phase behaviour of strontium-doped Ce1-xSrxCoO3-δ and found that the perovskite form is stabilised over a relatively narrow solid solution range (x > 0.85). A combination of electron, powder X-ray and neutron diffraction has revealed tetragonal superstructures of the basic perovskite unit; (I4/mmm) 2ap × 2ap × 4ap (x = 0.90) and (P4/mmm) ap × ap × 2ap (x = 0.95). Magnetisation measurements show ferromagnetic behaviour under applied magnetic fields. Low temperature neutron diffraction of Ce0.10Sr 0.90CoO2.80 in zero field reveals a magnetic cell of dimension 2ap × 2ap × 4ap with an ordered cobalt moment of 1.7 B.M. at 25 K.",

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author = "M. James and Wallwork, \{K. S.\} and Withers, \{R. L.\} and Goossens, \{D. J.\} and Wilson, \{K. F.\} and J. Horvat and Wang, \{X. L.\} and M. Colella",

year = "2005",

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doi = "10.1016/j.materresbull.2005.03.025",

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T1 - Structure and magnetism in the oxygen-deficient perovskites Ce 1-xSrxCoO3-δ (x ≥ 0.90)

AU - James, M.

AU - Wallwork, K. S.

AU - Withers, R. L.

AU - Goossens, D. J.

AU - Wilson, K. F.

AU - Horvat, J.

AU - Wang, X. L.

AU - Colella, M.

PY - 2005/8/11

Y1 - 2005/8/11

N2 - We have examined the structure and phase behaviour of strontium-doped Ce1-xSrxCoO3-δ and found that the perovskite form is stabilised over a relatively narrow solid solution range (x > 0.85). A combination of electron, powder X-ray and neutron diffraction has revealed tetragonal superstructures of the basic perovskite unit; (I4/mmm) 2ap × 2ap × 4ap (x = 0.90) and (P4/mmm) ap × ap × 2ap (x = 0.95). Magnetisation measurements show ferromagnetic behaviour under applied magnetic fields. Low temperature neutron diffraction of Ce0.10Sr 0.90CoO2.80 in zero field reveals a magnetic cell of dimension 2ap × 2ap × 4ap with an ordered cobalt moment of 1.7 B.M. at 25 K.

AB - We have examined the structure and phase behaviour of strontium-doped Ce1-xSrxCoO3-δ and found that the perovskite form is stabilised over a relatively narrow solid solution range (x > 0.85). A combination of electron, powder X-ray and neutron diffraction has revealed tetragonal superstructures of the basic perovskite unit; (I4/mmm) 2ap × 2ap × 4ap (x = 0.90) and (P4/mmm) ap × ap × 2ap (x = 0.95). Magnetisation measurements show ferromagnetic behaviour under applied magnetic fields. Low temperature neutron diffraction of Ce0.10Sr 0.90CoO2.80 in zero field reveals a magnetic cell of dimension 2ap × 2ap × 4ap with an ordered cobalt moment of 1.7 B.M. at 25 K.

KW - A. Oxides

KW - B. Sol-gel chemistry

KW - C. Electron diffraction

KW - D. Magnetic properties

UR - https://www.scopus.com/pages/publications/21744438842

U2 - 10.1016/j.materresbull.2005.03.025

DO - 10.1016/j.materresbull.2005.03.025

M3 - Article

SN - 0025-5408

VL - 40

SP - 1415

EP - 1431

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 8

ER -

Structure and magnetism in the oxygen-deficient perovskites Ce _1-xSr_xCoO_3-δ (x ≥ 0.90)

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