| Chromium (Cr) | |
| Atomic Number | 24 |
| Atomic Weight | 51.996 |
| Room Temperature Structure | hcp (A3) |
| Room Temperature Lattice Constant a | 0.251 nm |
| Room Temperature Lattice Constant c | 0.407 nm |
Note that Chromium is an anti-ferromagnet, but here we only provide parameters for the paramagnetic case:
The tight-binding parameters were fit to first-principles spin restricted (spin up density = spin down on each atom) Augmented Plane Wave (APW) results over the following ranges:
| Structure | Minimum Lattice Constant (Bohr) | Maximum Lattice Constant (Bohr) |
| fcc (A1) | 6.50 | 7.00 |
| bcc (A2) | 5.10 | 5.50 |
| Reference | Phys. Rev. B 54, 4519-30 (1996) | |
Use of the parameters outside of these ranges may result in unphysical behavior.