# MRO
A 40 Å cubic silicon supercell (~3068 atoms), medium-range order.
[`silicon_mro_generate.py`](../../_static/mace/silicon/mro_generate.py) reproduces this case.
## Orientation refinement
## MACE+wall relaxation
## Energy
```{image} ../../_static/mace/silicon/mro_energy_curve.png
:alt: Silicon MRO MACE energy per atom
:width: 100%
```
| stage | E (eV/atom) |
|---|---:|
| after orientation refinement | -4.471 |
| after cleanup | -4.865 |
| after MACE | -5.104 |
## g₃ distributions
**After cleanup**
**After MACE**
## Bond length and angle distributions
```{image} ../../_static/mace/silicon/mro_bond_hist.png
:alt: Silicon MRO bond length distribution
:width: 100%
```
```{image} ../../_static/mace/silicon/mro_angle_hist.png
:alt: Silicon MRO angle distributions
:width: 100%
```
```{image} ../../_static/mace/silicon/mro_gr.png
:alt: Silicon MRO pairwise g(r)
:width: 100%
```