Image file
25d
Rare-earth-free permanent magnet candidate system. WIP
23 on the hull, 634 near hull (≤150 meV)
Discovered 1667 structures, 1215 unique formulas
Stability (near = within 150 meV)
On this page
Metric |
|---|
On Hull |
|---|
Near |
|---|
Far |
|---|
Untested |
|---|
Hull | 23 | 634 | 588 | 422 |
Metric | Stable | Unstable | Untested |
|---|---|---|---|
Phonon | 429 | 87 | 1151 |
→ 22 fully stable (hull + phonon), 403 near-hull stable
Crystal Systems
System | Count | Percentage |
|---|---|---|
triclinic | 659 | 39.5% |
monoclinic | 313 | 18.8% |
hexagonal | 246 | 14.8% |
cubic | 168 | 10.1% |
trigonal | 118 | 7.1% |
tetragonal | 93 | 5.6% |
orthorhombic | 70 | 4.2% |
Top Space Groups
Space Group | Number | Count | Percentage |
|---|---|---|---|
P1 | #1 | 628 | 37.7% |
Cm | #8 | 173 | 10.4% |
Pm-3m | #221 | 104 | 6.2% |
P6/mmm | #191 | 90 | 5.4% |
Pm | #6 | 77 | 4.6% |
It's great to see that many P6/mmm systems! We'll look closer at the most stable of these.
At this point, assume all candidates shown have good enough magnetic density, Curie temperature, dynamical and thermodynamic stability. We'll be focusing on MAE viability in these studies.
MAE: 0.4202
MAE: 0.2228
Ggen exploration
MAE: 0.4041
Ggen exploration (explorationCo-Fe-Mn20260104_190709)
MAE: 0.6661
Ggen exploration
MAE: 0.0700
Honestly nothing impressive yet.
I'm going to keep exploring the system, as I think there are some areas of it I was missing (bug in Ggen). There was, and that's been fixed now.
We've been exploring a lot of Fe-Co-X systems, so naturally we've discovered a lot of Fe-Co systems. Let's see what's happening there.
For reference, MP PD.
Now ours. Again, I've seen this with FeGe, where the stable equal parts compound is missing.
I want to say there are some patterns we can see on this PD that may actually speak to the compatibility of these two elements. This is assuming we've sampled the landscape well, of course.
It seems that at each pole, lots of low energy compounds with small amounts of the other element. Nearing more equal parts, there is Fe9Co7 (cubic Pm3̅m) that is our lowest energy energy, then everything else a good barrier away from the hull.