AI Scientist: MnCrFe3Co3N2 SG #1 (score 0.470)

Hypothesis

An Fe-Co-Mn-Ni-N quaternary nitride intermetallic compound based on a Fe4Co2MnNiN2 composition with minor compositional tuning and subtle lattice adjustments within an ordered orthorhombic crystal structure (≤20 atoms per unit cell) can achieve dynamic stability, near thermodynamic stability (e_hull < 0.12 eV/atom), and a Curie temperature approaching 540 K. This composition maintains a magnetic density close to the target with enhanced magnetocrystalline anisotropy and saturation magnetization near or above 1.4 Tesla. Further fine-tuning of Mn/Ni ratios or slight lattice parameter modifications can marginally improve thermodynamic stability and magnetic properties without compromising the ordered structural framework.

Structure

Predicted properties

Summary

- The composition MnCrFe3Co3N2 can produce a magnetic material with a high Curie temperature and good magnetic density at low cost. - Dynamical stability suggests the structure is robust against lattice vibrations. - Slightly elevated energy above hull implies that the material is close to thermodynamic stability but not completely stable, highlighting a trade-off between magnetism and stability here. - Magnetic performance criteria are all met, showcasing the suitability of this multicomponent nitride for magnetic applications requiring high thermal stability.

Phase diagram

Iterations