Abstract
The magnetostriction of Fe-Ga alloys is significantly affected by the Ga content, which displays two positive peaks with increasing Ga concentration. This work presents a systematic structural investigation of rapidly-cooled Fe-Ga alloys by the synchrotron-based high-energy x-ray diffraction. Ga-rich clusters are evidenced for the alloys beyond the first magnetostriction peak, which is identified by the anomalous peak broadening for the (200) fundamental reflection and a shrink of lattice parameter. The generation of Ga-rich clusters in A2 matrix results in the sudden decrease of magnetostriction after the first magnetostriction peak. These findings are important for designing high-performance Fe-Ga magnetostrictive alloys by structural tuning.
Original language | English |
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Pages (from-to) | 223-227 |
Number of pages | 5 |
Journal | Journal of Alloys and Compounds |
Volume | 763 |
DOIs | |
Publication status | Published - 30 Sept 2018 |
Keywords
- Crystal structure
- Fe-Ga
- High-energy x-ray diffraction
- Magnetostriction
- Superlattice