Li₁₁Nd₁₈Fe₄O_39-δ Revisited

Author

Peter D. Battle
S. E. Dutton
Fernande Grandjean, Missouri University of Science and TechnologyFollow
Gary J. Long, Missouri University of Science and TechnologyFollow
Katsuyoshi Oh-Ishi

Abstract

The structure proposed for Li₁₁Nd₁₈Fe ₄O_39-δ (Chen et al. Inorg. Chem. 2012, 51, 8073) on the basis of diffraction and Mössbauer spectral data is compared to that determined previously for Nd₁₈Li₈Fe₅O ₃₉ (Dutton et al. Inorg. Chem.200847, 11212) using the same techniques. The Mössbauer spectrum reported by Chen et al. has been reinterpreted. The newly refined spectral parameters differ significantly from the published values but are similar to those reported for Nd ₁₈Li₈Fe₅O₃₉. The relative areas of the three components indicate that iron cations occupy the 2a, 8e, and 16i sites in space group Pm3Ì...n, in disagreement with the model determined from neutron diffraction by Chen et al. in which only the 2a and 8e sites are so occupied. The relationship between Li₁₁Nd₁₈Fe ₄O_39-δ and Nd₁₈Li₈Fe ₅O₃₉ is discussed, and it is proposed that the sample prepared by Dutton et al. is a kinetic product whereas the sample prepared by Chen et al. is the thermodynamically preferred product.

Recommended Citation

P. D. Battle et al., "Li₁₁Nd₁₈Fe₄O_39-δ Revisited," Inorganic Chemistry, vol. 52, no. 2, pp. 950 - 952, American Chemical Society (ACS), Jan 2013.

The definitive version is available at https://doi.org/10.1021/ic302209d

Department(s)

Chemistry

International Standard Serial Number (ISSN)

0020-1669

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2013 American Chemical Society (ACS), All rights reserved.

Publication Date

01 Jan 2013