ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The carbides (Er1−xSmx)2Fe17Cy (0≤x≤0.8) with a carbon concentration up to y=3.0 for the Er-rich region and up to y=1.5 for the Sm-rich region have been successfully prepared by melt spinning. They are found to crystallize in the hexagonal Th2Ni17-type or the rhombohedral Th2Zn17-type structure and to be stable at high temperature. The introduction of the interstitial carbon results in a large increase in the unit-cell volumes and Curie temperatures. The room-temperature saturation magnetization is found to increase with increasing carbon or samarium concentrations. X-ray diffraction studies of magnetically aligned powder show that the samples with x〈0.2 or y≤0.5 exhibit easy plane anisotropy while the samples with x≥0.2 and y≥1.0 exhibit easy c-axis anisotropy at room temperature. For (Er0.2Sm0.8)2Fe17C1.5, the room-temperature anisotropy field is found to be 8 T, which is comparable to that of Nd2Fe14B.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.355416
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