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.
Original language | English |
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Pages (from-to) | 954-959 |
Number of pages | 6 |
Journal | Journal of Solid State Chemistry |
Volume | 182 |
Issue number | 4 |
DOIs | |
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