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Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites

Kennedy, B.J., Saines, P.J., Zhou, Q., Zhang, Z., Matsuda, M., Miyake, M. (2008) Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites. Journal of Solid State Chemistry, 181 (10). pp. 2639-2645. ISSN 00224596 (ISSN). (doi:10.1016/j.jssc.2008.06.022) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Abstract

The structures of eight members of the series Sr1-xCe xMnO3 with 0.075â?¤xâ?¤0.4 have been established using synchrotron X-ray powder diffraction. These exhibit the sequence of structures cubic/Pm3Ì?m xâ??0.08/â?? tetragonal/14/mcm xâ??0.35/rarr; orthorhombic/Imma with increasing Ce content. Unusual peak broadening due to domainwall scattering is observed near the composition-induced first-order cubic-tetragonal transition. The temperature dependence of the structures for three examples x = 0.1, 0.2 and 0.35 is described. For the x = 0.1 and 0.35 samples evidence for a first-order loss of the orbital ordering associated with a cooperative Jahn-Teller distortion is presented. The onset of the orbitally disordered state is accompanied by a discontinuous reduction in cell volume. © 2008 Elsevier Inc. All rights reserved.

Item Type: Article
DOI/Identification number: 10.1016/j.jssc.2008.06.022
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - J. Solid State Chem. [Field not mapped to EPrints] AD - School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia [Field not mapped to EPrints] AD - Australian Nuclear Science and Technology Organisation, Private Mail Bag 1, Menai, NSW 2234, Australia [Field not mapped to EPrints] AD - Graduate School of Environmental Science, Okayuma University, 3-1-1 Tsushima-Naka, Okayama 700-8530, Japan [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Jahn-Teller effect, Manganese oxide, Perovskite, Phase transition, Cerium, Cerium compounds, Manganese, Manganese compounds, Oxide minerals, Perovskite, Ce contents, Discontinuous reductions, Disordered states, Domainwall scatterings, Electronic phase transitions, First orders, In cells, Jahn-Teller effect, Manganese oxide, Orbital orderings, Peak broadening, Powder diffractions, Temperature dependences, Phase transitions
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Paul Saines
Date Deposited: 07 Oct 2015 10:18 UTC
Last Modified: 29 May 2019 16:04 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50738 (The current URI for this page, for reference purposes)
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