The formation and magnetic properties of Dy2Fe17Cxwith high carbon content obtained by rapid solidification
- 5 October 1992
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 4 (40) , L515-L518
- https://doi.org/10.1088/0953-8984/4/40/003
Abstract
The carbides Dy2Fe17Cx with x=1.5-3.0 have been successfully prepared by the melt-spinning method. The X-ray diffraction patterns and the thermomagnetic curves show that they are of single phase in general with Th2Zn17 structure type when x=1.5, 2.0, 2.5 and 2.8 with a small amount of alpha -Fe as an impurity phase, while for x=3.0 the proportion of the alpha -Fe phase is high. The lattice parameters a and c are both enlarged and increase with the carbon content x. The Curie temperatures Tc are greatly enhanced when xs, increase slightly. The Dy2Fe17Cx ribbons still maintain the rhombohedral Th2Zn17-type structure after being annealed at 1100 degrees C for 14 h, which indicates the high stability of Dy2Fe17Cx (x=1.5-3.0) compounds obtained by rapid solidification. The heat-treated ribbon samples can be magnetically oriented and prefer an easy-plane anisotropy at room temperature.Keywords
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