Correlating structure with ferromagnetism in melt-spun Gd100-xFex
| Title | Correlating structure with ferromagnetism in melt-spun Gd100-xFex |
| Publication Type | Journal Article |
| Year of Publication | 2011 |
| Authors | Shand PM, Schmitter DC, Rojas G, Shield JE, Goertzen J, Meyer AL, Pekarek TM, Kramer MJ, Leslie-Pelecky DL |
| Journal Title | Journal of Alloys and Compounds |
| Volume | 509 |
| Pages | 3000-3005 |
| Date Published | 02 |
| Type of Article | Article |
| ISBN Number | 0925-8388 |
| Accession Number | ISI:000287058100071 |
| Keywords | alloys, COERCIVITY, crystallization behavior, curie-temperature, fe, ferromagnetism, films, GADOLINIUM, Gadolinium-iron alloy, magnetic-properties, NANOCRYSTALLINE, nanocrystalline gd, transition |
| 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 T-c. 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. (C) 2010 Elsevier B.V. All rights reserved. |
| URL | <Go to ISI>://000287058100071 |
| DOI | 10.1016/j.jallcom.2010.11.185 |
| Alternate Journal | J. Alloy. Compd. |
