| Abstract Scope |
It is now well known that the magnetic properties of High Entropy Alloys (HEAs) are significantly affected by the annealing. Co₃₅Cr₅Fe₁₀Ni₃₀Al₂₀ HEA synthesized through mechanical alloying, exhibited a mixture of fcc and bcc phase [1]. The value of Ms and Hc for the synthesized HEA was found to be 50 emu/g and 14 Oe respectively. However, for Co₃₅Cr₅Fe₁₀Ni₃₀Al₂₀ HEA annealed at 700°C, the volume phase fraction of the formed phases is changed and the value of Ms increased by 110%. To elucidate the origin of the drastic increase in saturation magnetization the HEAs samples are probed using advanced synchrotron-based techniques. After annealing, the Fe, Co, and Ni moments increased significantly, and valence band spectroscopy revealed modified density of states near the Fermi level. The detailed origin of the altered magnetic behaviour of Co₃₅Cr₅Fe₁₀Ni₃₀Al₂₀ HEA will be discussed during the presentation.
Reference:
[1] J. Appl. Phys. 139, 015103 (2026). |