Phelan, D.
and Gehring, P.
(2014),
Constraints on the Possible Long-Range Orbital Ordering in LaCoO<sub>3</sub>, Journal of Magnetism and Magnetic Materials, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=914667
(Accessed May 1, 2025)
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Constraints on the Possible Long-Range Orbital Ordering in LaCoO3
Published
Author(s)
Daniel P. Phelan,
Abstract
A neutron powder diffraction measurement was performed to distinguish between the proposed monoclinic (I2/a) structure of LaCoO3, which is consistent with orbital ordering, and the rhombohedral (R3c) structure, which is inconsistent with orbital ordering. These two structures were differentiated through a measurement of a superlattice reflection with a d-spacing of approximately 4.43 A which is only generated by I2/a. This reflection was not observed, and instead a restrictive upper bound was placed on its structure factor. The data is inconsistent with the monoclinic structure and suggests that there may be no long-range Jahn-Teller distortion in LaCoO3.Citation
Journal of Magnetism and Magnetic Materials
Volume
350
Pub Type
Journals
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Created December 31, 2013, Updated October 12, 2021