Correlating Structure With Ferromagnetism In Melt-Spun Gd 100-Xfex

Authors

P. M. Shand, University of Northern IowaFollow
D. C. Schmitter, University of Nebraska–LincolnFollow
G. Rojas, University of Nebraska–LincolnFollow
J. E. Shield, University of Nebraska–LincolnFollow
J. Goertzen, University of Nebraska–LincolnFollow
A. L. Meyer, University of Northern IowaFollow
T. M. Pekarek, University of North FloridaFollow
M. J. Kramer, Ames Laboratory
D. L. Leslie-Pelecky, University of Nebraska–LincolnFollow

Document Type

Article

Keywords

Coercivity, Ferromagnetism, Gadolinium-iron alloy, Nanocrystalline

Journal/Book/Conference Title

Journal of Alloys and Compounds

Volume

509

Issue

6

First Page

3000

Last Page

3005

Abstract

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.

Department

Department of Physics

Original Publication Date

2-10-2011

DOI of published version

10.1016/j.jallcom.2010.11.185

Recommended Citation

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.
https://scholarworks.uni.edu/facpub/1968