A Mössbauer spectral study of the Sm2Fe17-xAlx solid solutions

Authors

• Gary J. Long, Missouri University of Science and Technology
• O. A. Pringle, Missouri University of Science and Technology
• P. C. Ezekwenna, Missouri University of Science and Technology
• S. R. Mishra, Missouri University of Science and Technology
• Dimitri Hautot, Missouri University of Science and Technology
• F. Grandjean, Université de Liège

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.

Publication Title

Journal of Magnetism and Magnetic Materials

Recommended Citation

Long, G., Pringle, O., Ezekwenna, P., Mishra, S., Hautot, D., & Grandjean, F. (1998). A Mössbauer spectral study of the Sm2Fe17-xAlx solid solutions. Journal of Magnetism and Magnetic Materials, 186 (1-2), L10-20. https://doi.org/10.1016/s0304-8853(98)00084-5