The Importance of the Wigner-Seitz Cell Volume in Determining the Cobalt Site Occupancy in Nd₂(Fe,⁵⁷Co)₁₄B

Author

Gary J. Long, Missouri University of Science and TechnologyFollow
Fernande Grandjean, Missouri University of Science and TechnologyFollow

Abstract

The cobalt-57 emission Mössbauer spectrum of Nd₂(Fe,⁵⁷Co)₁₄B has been analyzed with a model previously used to study Nd₂Fe₁₄B and related compounds. The preferential cobalt occupancies in Nd₂Fe₁₄B, obtained from the relative intensities of the six sextets used to fit the emission spectrum, show a virtually perfect linear correlation with the Wigner-Seitz cell volume of each of the six iron sites. Thus it would appear that the preferential site substitution of cobalt is controlled by the volume of the crystallographic site and the metallic radius of cobalt. This linear correlation provides support for the assignment of the weak sites in the Mössbauer spectrum of Nd₂Fe₁₄B.

Recommended Citation

G. J. Long and F. Grandjean, "The Importance of the Wigner-Seitz Cell Volume in Determining the Cobalt Site Occupancy in Nd₂(Fe,⁵⁷Co)₁₄B," Journal of Magnetism and Magnetic Materials, vol. 162, no. 2016-02-03, pp. 162 - 166, Elsevier, Sep 1996.

The definitive version is available at https://doi.org/10.1016/S0304-8853(96)00289-2

Department(s)

Chemistry

Keywords and Phrases

Cobalt; Crystallography; Electronic Structure; Emission Spectroscopy; Mathematical Models; Mössbauer Spectroscopy; Neodymium Alloys; Preferential Cobalt Occupancies; Weak Crystallographic Sites; Wigner-Seitz Cell Volume; Permanent Magnets; Ferromagnetic Materials

International Standard Serial Number (ISSN)

0304-8853

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1996 Elsevier, All rights reserved.

Publication Date

01 Sep 1996