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

17 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

Access to Document

10.1016/j.materresbull.2005.03.025

Cite this

@article{9b87175a92484a7fb2139190b31f901f,

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.",

keywords = "A. Oxides, B. Sol-gel chemistry, C. Electron diffraction, D. Magnetic properties",

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",

month = aug,

day = "11",

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

language = "English",

volume = "40",

pages = "1415--1431",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Ltd.",

number = "8",

}

TY - JOUR

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 - http://www.scopus.com/inward/record.url?scp=21744438842&partnerID=8YFLogxK

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)

Abstract

Access to Document

Other files and links

Fingerprint

Cite this