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Ass. Lect. Abdelkariem Karam Abdelkariem Mohamed :: Publications: |
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| Title: | Effect of high magnetic field on the phase transition in Fe-24%Ga and Fe-27%Ga during isothermal annealing |
| Authors: | V.A. Milyutin, I.V. Gervasyeva, D.A. Shishkin, Yu.N. Gornostyrev, E. Beaugnon, I.A. Bobrikov, A.M. Balagurov, A.K. Mohamed, I.S. Golovin |
| Year: | 2020 |
| Keywords: | Phase transitions;Fe-Ga alloys;High magnetic field;Neutron diffraction;Metastable state |
| Journal: | Journal of magnetism and magnetic materials |
| Volume: | 514 |
| Issue: | Not Available |
| Pages: | 167284 |
| Publisher: | Elsevier BV |
| Local/International: | International |
| Paper Link: | |
| Full paper | AbdelKariem Karam AbdelKariem Mohamed_1-s2.0-S030488532031372X-main.pdf |
| Supplementary materials | Not Available |
| Abstract: |
The effect of a high magnetic field (25 T) on the D03 to L12 phase transformation in two Fe-Ga alloys with 24 and 27 at.% Ga during isothermal annealing at 475 °C is investigated using neutron diffraction and magnetization measurements techniques. It is proved that annealing in the magnetic field increases the amount of fcc – derived L12 phase in both samples. This effect is stronger in the Fe-27%Ga alloy as compared with the Fe-24%Ga alloy. The reasons for enhancing the D03 to L12 phase transition in the magnetic field are discussed. We suggest that the most significant increase in the transformation rate is related to a decrease in the energy barrier between the phases involved in the transformation process. |
