Structural characterisation of the perovskite series Sr0.9-xCaxCe0.1MnO3: Influence of the Jahn-Teller effect

Brendan J. Kennedy; Jimmy Ting; Qingdi Zhou; Zhaoming Zhang; Motohide Matsuda; Michihiro Miyake

doi:10.1016/j.jssc.2008.12.032

Structural characterisation of the perovskite series Sr_0.9-xCa_xCe_0.1MnO₃: Influence of the Jahn-Teller effect

Brendan J. Kennedy, Jimmy Ting, Qingdi Zhou, Zhaoming Zhang, Motohide Matsuda, Michihiro Miyake

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

7 Citations (Scopus)

Abstract

Fifteen perovskite-type compounds Sr_0.9-xCa_xCe_0.1MnO₃, x=0-0.9 in steps as fine as 0.05, have been synthesised by solid state methods, and the room temperature structures characterised using X-ray synchrotron powder diffraction. At low Ca contents (x≤0.45) the structures are tetragonal in space group I4/mcm and at high Ca contents (x≥0.55) the compounds are orthorhombic in space group Pbnm. At room temperature these two phases co-exist in the compound with x=0.5. XANES measurements show the Ce to be present as Ce⁴⁺ in all the oxides. High temperature structures are reported for selected members.

Original language	English
Pages (from-to)	954-959
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	182
Issue number	4
DOIs	https://doi.org/10.1016/j.jssc.2008.12.032
Publication status	Published - Apr 2009

Keywords

Jahn-Teller effect
Perovskite
Phase transition

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/j.jssc.2008.12.032

Cite this

@article{107273ce145a401aa4f9f5be503a212b,

title = "Structural characterisation of the perovskite series Sr0.9-xCaxCe0.1MnO3: Influence of the Jahn-Teller effect",

abstract = "Fifteen perovskite-type compounds Sr0.9-xCaxCe0.1MnO3, x=0-0.9 in steps as fine as 0.05, have been synthesised by solid state methods, and the room temperature structures characterised using X-ray synchrotron powder diffraction. At low Ca contents (x≤0.45) the structures are tetragonal in space group I4/mcm and at high Ca contents (x≥0.55) the compounds are orthorhombic in space group Pbnm. At room temperature these two phases co-exist in the compound with x=0.5. XANES measurements show the Ce to be present as Ce4+ in all the oxides. High temperature structures are reported for selected members.",

keywords = "Jahn-Teller effect, Perovskite, Phase transition",

author = "Kennedy, {Brendan J.} and Jimmy Ting and Qingdi Zhou and Zhaoming Zhang and Motohide Matsuda and Michihiro Miyake",

note = "Funding Information: This work was, in part, performed at the Australian National Beamline Facility with support from the Australian Synchrotron Research Program, which is funded by the Commonwealth of Australia under the Major National Research Facilities programme. B.J.K. acknowledges the support of the Australian Research Council.",

year = "2009",

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doi = "10.1016/j.jssc.2008.12.032",

language = "English",

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T2 - Influence of the Jahn-Teller effect

AU - Kennedy, Brendan J.

AU - Ting, Jimmy

AU - Zhou, Qingdi

AU - Zhang, Zhaoming

AU - Matsuda, Motohide

AU - Miyake, Michihiro

N1 - Funding Information: This work was, in part, performed at the Australian National Beamline Facility with support from the Australian Synchrotron Research Program, which is funded by the Commonwealth of Australia under the Major National Research Facilities programme. B.J.K. acknowledges the support of the Australian Research Council.

PY - 2009/4

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N2 - Fifteen perovskite-type compounds Sr0.9-xCaxCe0.1MnO3, x=0-0.9 in steps as fine as 0.05, have been synthesised by solid state methods, and the room temperature structures characterised using X-ray synchrotron powder diffraction. At low Ca contents (x≤0.45) the structures are tetragonal in space group I4/mcm and at high Ca contents (x≥0.55) the compounds are orthorhombic in space group Pbnm. At room temperature these two phases co-exist in the compound with x=0.5. XANES measurements show the Ce to be present as Ce4+ in all the oxides. High temperature structures are reported for selected members.

AB - Fifteen perovskite-type compounds Sr0.9-xCaxCe0.1MnO3, x=0-0.9 in steps as fine as 0.05, have been synthesised by solid state methods, and the room temperature structures characterised using X-ray synchrotron powder diffraction. At low Ca contents (x≤0.45) the structures are tetragonal in space group I4/mcm and at high Ca contents (x≥0.55) the compounds are orthorhombic in space group Pbnm. At room temperature these two phases co-exist in the compound with x=0.5. XANES measurements show the Ce to be present as Ce4+ in all the oxides. High temperature structures are reported for selected members.

KW - Jahn-Teller effect

KW - Perovskite

KW - Phase transition

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