Title

A Mössbauer Spectral Study of the Sm₂Fe₁₇₋ₓAlₓ Solid Solutions

Abstract

The Mössbauer spectra of the Sm2Fe17-xAlx solid solutions, where x is 0, 0.5, 0.75, 1, 3, and 4, which crystallize in the rhombohedral Th2Zn17 structure, have been measured between 85 and 295 K. The spectra have been successfully analyzed with a model based on the binomial distribution of aluminum near neighbors calculated from the aluminum site occupancies derived from neutron diffraction measurements on Nd2Fe17-xAlx solid solutions. This analysis indicates that the Mössbauer spectra are sensitive to the spin reorientation occurring between x values of one and three, confirms that the aluminum site occupancies are independent of the rare-earth element in the R2Fe17-xAlx solid solutions, gives values of the iron site magnetic moments, and reveals an important covalent bonding between iron and its aluminum near neighbors. © 1998 Elsevier Science B.V. All rights reserved.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1998 Elsevier, All rights reserved.


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