ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Carbides with nominal compositions of (Er0.8Y0.2)2Fe17Cx (x=0, 0.5, 1.0, 1.5, 2.0, 2.5, 2.8) were prepared by arc-melting and melt-spinning method. The arc-melted and heat-treated samples with x=0, 0.5, 1.0 are single-phase, hexagonal Th2Ni17 structure. When x=1.5, the Th2Ni17 structure transforms to the Th2Zn17 structure, while for x≥1.5, only optimal melt-spun samples crystallize in the Th2Zn17 structure. The carbides with x≥1.5 are stable and maintain their rhombohedral structure after being heat treated at 1000 °C. The carbides with x=2.8 have a 6.5% volume expansion and a 345-K Curie temperature enhancement over those of the carbon-free compound. The magnetic moment per iron atom μFe remains 1.96 μB throughout the entire series. The spin reorientation temperature TSR increases, when carbon enters interstitially, from 71 K when x=1.0 to about 122 K when x=2.8.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.353511
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