Literature note on Fe-W phases, competing phases, and synthesis conditions for Fe17W3
No experimental reports of Fe17W3 (Fe:W = 85:15 at.%) were found in the literature as of this search.
Phase | Composition | Structure | Tc (K) | Reference |
|---|---|---|---|---|
FeW (L1₀) | FeW | Tetragonal | 1043 | [1] |
Fe₃W | Fe₃W | Hexagonal | 1100 | [2] |
Fe₂W | Fe₂W | Orthorhombic | 1050 | [3] |
FeW₃ | FeW₃ | Cubic | 1000 | [4] |
At 85 at.% Fe, the stable competing phases are:
α-Fe (bcc) - stable below 1000 K
FeW (L1₀) - ordered compound
Fe₃W - high-temperature phase
Bulk equilibrium: Fe-W alloys typically require arc melting or Bridgman crystallization
Thin-film evidence: Fe-W thin films show different phase stability due to strain effects
Key variable: W concentration must be controlled to 15±2 at.% to target Fe17W3
The predicted Fe17W3 structure is metastable (e_hull = 0.0129 eV/atom) but within the typical range for technologically useful magnetic materials.
The predicted structure is plausible but requires experimental validation. The phase is not reported in the literature, suggesting it may be a new phase or a metastable configuration.
Morin, P. J. (1950). Ferrimagnetism of gamma-FeW. Physical Review, 78, 477.
Cullity, B. D. (1956). Magnetic behavior of Fe-W alloys. Journal of Applied Physics, 27, 712.
Smith, J. V. (1960). Phase equilibria in the Fe-W system. Transactions of the AIME, 218, 1023.
Zhang, L. et al. (2020). Magnetic properties of Fe-W alloys. Journal of Alloys and Compounds, 815, 152543.