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Abstract
The miscibility of TbBaMn2O5+x, and TbBaMn2O5.5-y, has been investigated at 100-600 degrees C using in situ powder neutron diffraction. No miscibility is observed, and the two phases remain oxygen stoichiometric (x, y = 0) at 600 degrees C. Structure refinement results show that neither material undergoes a phase transition in this temperature range. TbBaMn2O5 is Mn2+/Mn3+ charge ordered and any charge melting transition is > 600 degrees C. This symmetry-broken charge ordering is remarkably robust in comparison to that in other oxides. (c) 2006 Elsevier Inc. All rights reserved.
Original language | English |
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Pages (from-to) | 3505-3510 |
Number of pages | 6 |
Journal | Journal of Solid State Chemistry |
Volume | 179 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 2006 |
Keywords / Materials (for Non-textual outputs)
- neutron diffraction
- MAGNETIC-STRUCTURE
- CRYSTAL
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Dive into the research topics of 'High-temperature neutron diffraction study of the cation ordered perovskites TbBaMn2O5+x and TbBaMn2O5.(5-y)'. Together they form a unique fingerprint.Projects
- 1 Finished
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Super-D2B-A high resolution and intensity neutron powder diffractometer
1/09/03 → 31/05/07
Project: Research