A Neutron Diffraction and Mössbauer Effect Study of the Nd₂Fe₁₇₋ₓSiₓ Solid Solutions

Author

Gary J. Long, Missouri University of Science and TechnologyFollow
Gaya Kanishka Marasinghe
Sanjay R. Mishra
Oran Allan Pringle, Missouri University of Science and TechnologyFollow
Fernande Grandjean, Missouri University of Science and TechnologyFollow
K. H. J. Buschow
D. P. Middleton
William B. Yelon, Missouri University of Science and Technology
Faiz Pourarian
Olivier Isnard

Abstract

The substitution of silicon for iron in Nd₂Fe₁₇ strongly raises the Curie temperature but leads to a reduction in the unit cell volume. Refinement of the neutron-diffraction pattern for Nd₂Fe_12.91Si_4.09 indicates that silicon preferentially occupies the 18h site in the Nd₂Fe₁₇ structure, the site with the most neodymium near neighbors. This occupation is surprising because conventional arguments would suggest that replacement of iron on the 6c site, which has a very short iron to near-neighbor iron bond length, would yield an increase in the Curie temperature.

Recommended Citation

G. J. Long and G. K. Marasinghe and S. R. Mishra and O. A. Pringle and F. Grandjean and K. H. Buschow and D. P. Middleton and W. B. Yelon and F. Pourarian and O. Isnard, "A Neutron Diffraction and Mössbauer Effect Study of the Nd₂Fe₁₇₋ₓSiₓ Solid Solutions," Solid State Communications, vol. 88, no. 10, Elsevier, Jan 1993.

The definitive version is available at https://doi.org/10.1016/0038-1098(93)90872-K

Department(s)

Chemistry

Second Department

Physics

Keywords and Phrases

Crystallography; Electronic Properties; Iron; Magnetic Properties; Mössbauer Spectroscopy; Neutron Diffraction; Silicon; Solid Solutions; Structure (Composition); Substitution Reactions; Temperature; Curie Temperature; Mössbauer Effect; Neodymium Compounds

International Standard Serial Number (ISSN)

0038-1098

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1993 Elsevier, All rights reserved.

Publication Date

01 Jan 1993