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Magnetic Hardening of Mechanichally Alloyed SmFe11−xCoxTi

Published online by Cambridge University Press:  21 February 2011

L. Bessais  and
C. Djega-Mariadassou
L. Bessais
Affiliation:
CNRS, LCMTR UPR 209, 94320 Thiais, Francebessais@glvt-cnrs.fr
C. Djega-Mariadassou
Affiliation:
CNRS, LCMTR UPR 209, 94320 Thiais, France
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Abstract

Mechanical alloying of ternary SmFe11−xCoxTi (x = 0, 0.5, 1, 1.5, 2) alloys was carried out under an Ar atmosphere. Milled samples were annealed for 30 min in a vacuum at different temperatures Ta from 650 °C to 1150 °C. The effects of heat treatment, on structure and magnetic property changes, have been investigated by means of x-ray diffraction using the Rietveld method, Mössbauer spectroscopy and differential sample magnetometer. Tetragonal ThMn12-type structure is observed for samples annealed at Ta > 900 °C. For 650<Ta<800 °C the TbCu7 type phase was identified as the major phase. Between these two regions a mixture of TbCu7 and ThMn12-type nanocrystalline phases is obtained with a maximum of the coercive field Hc (Hc > 5kOe). The Mössbauer spectra relative to the hexagonal phase show sextuplets broadened by the statistical occupancies of the iron sites. An enhancement of the magnetic properties results from the Co substitution.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 581: Symposium F – Nanophase & Nanocomposite Materials II , 1999 , 259
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

1. Cheng, S. F., Sinha, V. K., Xu, Y., Elbicki, J. M., Boltich, E. B., Wallace, W. E., Sankar, S. G., and Laughlin, D. E., J. Magn. Magn. Mater. 75, 330 (1988).Google Scholar
2. Rodriguez-Carvajal, J., Physica B192, 55 (1993).Google Scholar
3. Xiao, Q.F., Zhang, Z.D., Zhao, T., Liu, W., Sui, C., Zhao, X.G., and Geng, D.Y., J. Appl. Phys. 82, 6170 (1997).Google Scholar
4. Li, Z.W., Zhou, X.Z., and Morrish, A.H., J. Appl. Phys 69, 5602 (1991).Google Scholar
5. Givrod, D., Laforest, J., Schweizer, J. and Tasset, F., J. Appl. Phys. 50, 2008 (1979).Google Scholar
6. Hu, B., Wang, K., Wang, Y., Wang, Z., Yan, Q., and Sun, X., Phys. Rev. B 51, 2905 (1995).Google Scholar
7. Givord, D. and Lemaire, R., IEEE Trans. Magn. Mag. 10, 109 (1974).Google Scholar