Abstract
The low-temperature superstructure of YFe2 O4-δ was carefully investigated by transmission electron microscopy. We found that the unique superstructure at about 100 K is characterized by 1̄ /142/71/14 -type superlattice reflection spots, suggesting the presence of charge-reordering process. The low-temperature high-resolution images clearly show superlattice modulations in Y-O layers as well as Fe-O layers. The modification of intrabilayer charge interactions due to lattice distortions in Y-O layers is discussed to play a crucial role in the stabilization of long-periodic superstructures at low temperatures.
| Original language | English |
|---|---|
| Article number | 184119 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 82 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - Nov 29 2010 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Horibe, Y., Ikeda, N., Yoshii, K., & Mori, S. (2010). Direct observation of low-temperature superstructure in spin- and charge-frustrated ferrite YFe2 O4-δ. Physical Review B - Condensed Matter and Materials Physics, 82(18), [184119]. https://doi.org/10.1103/PhysRevB.82.184119