The DOI matches its Crossref record; 13 of the 13 references it cites were found in a registry or an index.
Charge ordered structure of magnetiteFe3O4below the Verwey transition
Abstract
The crystal structure of highly stoichiometric magnetite $({\mathrm{Fe}}_{3}{\mathrm{O}}_{4})$ below the Verwey transition has been refined from high-resolution neutron and synchrotron x-ray powder-diffraction data. The refined model has a monoclinic $P2/c$ symmetry cell with orthorhombic Pmca pseudosymmetry constraints on the atomic positions, and contains four independent octahedral B site iron atoms. Charge ordering is evidenced by the presence of expanded and contracted $B{\mathrm{O}}_{6}$ octahedra, and by the distribution of B-B distances resulting from unequal Coulombic repulsions between the different B site charges. The B-B distances are inconsistent with dimer formation. Competition between the $B\ensuremath{-}\mathrm{O}$ and B-B interactions results in polar displacements of two of the B site cations. The charge ordering has a predominant [001] density modulation, which relieves a nesting instability in the electronic density of states, but a second $[00\frac{1}{2}]$ phase modulation also occurs. The monoclinic distortion at the Verwey transition is consistent with a macroscopic rhombohedral magnetostriction, driven by the localization of orbitally degenerate ${\mathrm{Fe}}^{2+},$ coincident with the microscopic charge ordering distortions that have an orthorhombic lattice symmetry.
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Citations
Cites
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Wright, J. P., Attfield, J. P., & Radaelli, P. G. (2001) · Physical Review Letters · doi:10.1103/physrevlett.87.266401 · Cited by 333
Self-citationInfrared and Raman studies of the Verwey transition in magnetite
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Cited by
Multiferroicity due to charge ordering
van den Brink, J., & Khomskii, D. I. (2008) · Journal of Physics: Condensed Matter · doi:10.1088/0953-8984/20/43/434217 · Cited by 527
The Verwey transition—a new perspective
García, J., & Subías, G. (2004) · Journal of Physics: Condensed Matter · doi:10.1088/0953-8984/16/7/r01 · Cited by 288
Charge-Orbital Ordering and Verwey Transition in Magnetite
Jeng, H.-T., Guo, G. Y., & Huang, D. J. (2004) · Physical Review Letters · doi:10.1103/physrevlett.93.156403 · Cited by 274
Charge order in magnetite. An LDA+ U study
Madsen, G. K. H., & Novák, P. (2005) · Europhysics Letters (EPL) · doi:10.1209/epl/i2004-10416-x · Cited by 260
Novel magnetic nanomaterials inspired by magnetotactic bacteria: Topical review
Prozorov, T., Bazylinski, D. A., Mallapragada, S. K., & Prozorov, R. (2013) · Materials Science and Engineering: R: Reports · doi:10.1016/j.mser.2013.04.002 · Cited by 137
Metadata
- Authors
- Wright, J. P., Attfield, J. P., & Radaelli, P. G.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2002-12-31
- Volume
- 66
- Issue
- 21
- ISSN
- 0163-1829 (ISSN-L)
- 1095-3795
- OpenAlex
- W2049873552
- Cited by
- 337
- References
- 13
- FWCI
- 6.70
- Type
- journal article
- Language
- en
- Open access
- closed
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