Mössbauer effect measurement evidence for magnetic transition in ordered Fe-doped NiAl
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 98-102 |
| Journal / Publication | Intermetallics |
| Volume | 15 |
| Issue number | 2 |
| Publication status | Published - Feb 2007 |
| Externally published | Yes |
Link(s)
Abstract
Mössbauer effect measurements at room and cryogenic temperatures on powdered Fe-doped NiAl materials (designated as Ni-40Al-9Fe and Ni-50Al-9Fe) show that both were paramagnetic down to17 K, displaying one Fe site in the host. At 4.2 K, Ni-40Al-9Fe remained paramagnetic, while Ni-50Al-9Fe showed a magnetic transition, with a clearly resolved Fe environment. The determined internal magnetic field was 185 ± 8 kOe in comparison to 330 kOe for α-Fe (bcc) reference at room temperature. This shows that development and evolution of electronic and magnetic interactions associated with the dopant Fe in the ordered NiAl depend on its site preference tendencies. The temperature dependence of magnetic state of the dopant Fe, in conjunction with its site preference tendencies from Mössbauer effect measurements, confirms the effectiveness of this technique in the study of the hardening/softening behaviors of Fe-doped NiAl. © 2006 Elsevier Ltd. All rights reserved.
Research Area(s)
- A. Nickel aluminides, based on NiAl, B. Magnetic properties, D. Site occupancy, E. Phase stability, prediction, F. Spectroscopic methods, various
Citation Format(s)
Mössbauer effect measurement evidence for magnetic transition in ordered Fe-doped NiAl. / Uwakweh, Oswald N.C.; Liu, C. T.
In: Intermetallics, Vol. 15, No. 2, 02.2007, p. 98-102.
In: Intermetallics, Vol. 15, No. 2, 02.2007, p. 98-102.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
