A Mössbauer Spectral Study of the Sm₂Fe₁₇₋ₓAlₓ Solid Solutions
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.
G. J. Long et al., "A Mössbauer Spectral Study of the Sm₂Fe₁₇₋ₓAlₓ Solid Solutions," Journal of Magnetism and Magnetic Materials, Elsevier, Jan 1998.
The definitive version is available at http://dx.doi.org/10.1016/S0304-8853(98)00084-5
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© 1998 Elsevier, All rights reserved.