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.

Department(s)

Chemistry

Second Department

Physics

Keywords and Phrases

Chemical Bonds; Crystal Orientation; Crystallization; Intermetallics; Magnetic Moments; Mathematical Models; Mössbauer Spectroscopy; Neutron Diffraction; Samarium Alloys; Solid Solutions; Rhombohedral Structure; Spin Reorientation; Ferromagnetic Materials; Intermetallic Solid Solutions

International Standard Serial Number (ISSN)

3048853

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1998 Elsevier, All rights reserved.


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