A Mössbauer Spectral Study of the NdMn₆₋ₓFeₓGe₆ Solid Solutions

Author

Gary J. Long, Missouri University of Science and TechnologyFollow
Fernande Grandjean, Missouri University of Science and TechnologyFollow
Jing Zhi Han
William Joseph James, Missouri University of Science and TechnologyFollow

Abstract

The Mössbauer spectra of the NdMn_6-xFe_xGe₆ solid solutions, with x = 0.5, 1.0 and 1.5 have been obtained at 4.2, 78 and 295 K. They are analyzed in terms of a binomial distribution of environments for the iron 3g sites. The 78 K weighted average hyperfine fields vary between 14.7 and 15.3 T. The hyperfine field increases with increasing number of iron near neighbours. The isomer shift decreases with increasing x, in agreement with the concomitant unit-cell contraction. The 78 K quadrupole shift of NdMn_5.5Fe_0.5Ge₆ is different from those of NdMn₅FeGe₆ and NdMn_4.5Fe_1.5Ge₆ and indicates that the iron magnetic moments have a different orientation in the former compound, i.e., they lie in the basal plane of the hexagonal unit cell.

Recommended Citation

G. J. Long et al., "A Mössbauer Spectral Study of the NdMn₆₋ₓFeₓGe₆ Solid Solutions," Journal of Alloys and Compounds, vol. 403, no. 2016-01-02, pp. 91 - 96, Elsevier, Nov 2005.

The definitive version is available at https://doi.org/10.1016/j.jallcom.2005.09.015

Department(s)

Chemistry

Keywords and Phrases

Intermetallics; Magnetic Moments; Neodymium Compounds; Rare Earth Compounds; Solid Solutions; Basal Plane; Binomial Distribution; Hyperfine Field; Rare-earth Intermetallic Compounds; Mössbauer Spectroscopy

International Standard Serial Number (ISSN)

0925-8388

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2005 Elsevier, All rights reserved.

Publication Date

01 Nov 2005