# Mixed sp²/sp³

A 40 Å cubic carbon supercell (~8431 atoms), interleaved sp²/sp³ grains.

[`carbon_mixed_nc_generate.py`](../../_static/mace/carbon/mixed_nc_generate.py) reproduces this case.

## Orientation refinement

<iframe src="../../_static/mace/carbon/mixed_nc_orient_movie.html" width="100%" height="560"
        style="border: 1px solid rgba(0,0,0,0.1); border-radius: 6px;" loading="lazy"></iframe>

## MACE+wall relaxation

<iframe src="../../_static/mace/carbon/mixed_nc_mace_movie.html" width="100%" height="560"
        style="border: 1px solid rgba(0,0,0,0.1); border-radius: 6px;" loading="lazy"></iframe>

## Energy

```{image} ../../_static/mace/carbon/mixed_nc_energy_curve.png
:alt: Carbon Mixed sp²/sp³ MACE energy per atom
:width: 100%
```

| stage | E (eV/atom) |
|---|---:|
| after orientation refinement | -8.060 |
| after cleanup | -8.180 |
| after MACE | -8.632 |

## g₃ distributions

**After cleanup**

<iframe src="../../_static/mace/carbon/mixed_nc_g3_cleanup.html" width="100%" height="480"
        style="border: 1px solid rgba(0,0,0,0.1); border-radius: 6px;" loading="lazy"></iframe>

**After MACE**

<iframe src="../../_static/mace/carbon/mixed_nc_g3_mace.html" width="100%" height="480"
        style="border: 1px solid rgba(0,0,0,0.1); border-radius: 6px;" loading="lazy"></iframe>

## Bond length and angle distributions

```{image} ../../_static/mace/carbon/mixed_nc_bond_hist.png
:alt: Carbon Mixed sp²/sp³ bond length distribution
:width: 100%
```

```{image} ../../_static/mace/carbon/mixed_nc_angle_hist.png
:alt: Carbon Mixed sp²/sp³ angle distributions
:width: 100%
```

```{image} ../../_static/mace/carbon/mixed_nc_gr.png
:alt: Carbon Mixed sp²/sp³ pairwise g(r)
:width: 100%
```