Correlating structure with ferromagnetism in melt-spun Gd 100-xFex
Coercivity, Ferromagnetism, Gadolinium-iron alloy, Nanocrystalline
Journal of Alloys and Compounds
X-ray diffraction and transmission electron microscopy measurements of melt-spun Gd100-xFex (0 x 40) and inert-gas condensed/compacted samples (3.8 x 12.7) reveal a structure of crystalline hcp-Gd grains surrounded by a non-crystalline Gd1-xeffFexeff phase, where x eff > x is the effective iron concentration within the amorphous region. The two-phase structure is responsible for an unusual dependence of the coercivity on temperature in which non-zero coercivity is observed above the hcp-Gd Tc with a peak near 320 K. The coercivity decreases as the hcp-Gd grains order, then increases with decreasing temperature. This behavior is explained by the presence of magnetically correlated Fe-rich regions. © 2010 Elsevier B.V. All rights reserved.
Original Publication Date
DOI of published version
Shand, P. M.; Schmitter, D. C.; Rojas, G.; Shield, J. E.; Goertzen, J.; Meyer, A. L.; Pekarek, T. M.; Kramer, M. J.; and Leslie-Pelecky, D. L., "Correlating structure with ferromagnetism in melt-spun Gd 100-xFex" (2011). Faculty Publications. 1968.