Neutron Diffraction and Mössbauer Effect Study of Several Nd₂Fe₁₇₋ₓAlₓ Solid Solutions

Author

William B. Yelon, Missouri University of Science and Technology
H. Xie
Gary J. Long, Missouri University of Science and TechnologyFollow
Oran Allan Pringle, Missouri University of Science and TechnologyFollow
Fernande Grandjean, Missouri University of Science and TechnologyFollow
K. H. J. Buschow

Abstract

Aluminum-substituted Nd₂Fe_17-xAl_x solid solutions with x=2.30, 4.44, 6.13, 8.00, and 9.40 have been studied by neutron diffraction and Mössbauer spectroscopy. A Rietveld analysis of the neutron scattering indicates that the aluminum atoms have a high initial affinity for the 18h site, show a high affinity for the 6c site at high aluminum concentrations, and are absent from the 9d site at all aluminum concentrations. The Mössbauer spectra show a maximum in both the maximum and weighted average hyperfine field for x≅2. This indicates that the lattice expansion which occurs with aluminum substitution is sufficient, at least for small values of x, where magnetic dilution is small, to enhance the intrasublattice coupling between the iron moments, and to increase the magnetic hyperfine fields.

Recommended Citation

W. B. Yelon et al., "Neutron Diffraction and Mössbauer Effect Study of Several Nd₂Fe₁₇₋ₓAlₓ Solid Solutions," Journal of Applied Physics, vol. 73, no. 10, pp. 6029 - 6031, American Institute of Physics (AIP) Publishing, Nov 1994.

The definitive version is available at https://doi.org/10.1063/1.353459

Department(s)

Physics

Second Department

Chemistry

International Standard Serial Number (ISSN)

0021-8979

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1993 American Institute of Physics (AIP) Publishing, All rights reserved.

Publication Date

01 Nov 1994