Structural investigations of Fe-Ga alloys by high-energy x-ray diffraction
- Beijing Institute of Technology (China)
- University of Science and Technology Beijing (China)
- Argonne National Lab. (ANL), Argonne, IL (United States)
The magnetostriction of Fe-Ga alloys is significantly affected by the Ga content, which displays two positive peaks with increasing Ga concentration. This paper 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. In conclusion, these findings are important for designing high-performance Fe-Ga magnetostrictive alloys by structural tuning.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); Fundamental Research Funds for the Central Universities
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1488545
- Alternate ID(s):
- OSTI ID: 1591692
- Journal Information:
- Journal of Alloys and Compounds, Vol. 763, Issue C; ISSN 0925-8388
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Phase diagram of magnetostrictive Fe-Ga alloys: insights from theory and experiment
|
journal | December 2018 |
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