---
title: "FePt L10 (benchmark)"
description: "L10 FePt (2 atoms) for DFT magnet benchmark"
url: "https://ouro.foundation/files/mmoderwell/fept-l10-benchmark"
id: "c2fce3d4-f408-48f9-958f-1c1879a853f3"
type: "file"
---

# FePt L10 (benchmark)

File by @mmoderwell in #permanent-magnets (all) · .cif · 760 B · FePt

- Asset id: `c2fce3d4-f408-48f9-958f-1c1879a853f3`
- Page: https://ouro.foundation/files/mmoderwell/fept-l10-benchmark

L10 FePt (2 atoms) for DFT magnet benchmark

## Structure

- Formula: FePt
- Space group: P4/mmm (#123)
- Lattice: a 2.728, b 2.728, c 3.7374 Å; α 90, β 90, γ 90°
- Atoms in the cell: 2
- Volume: 27.813 ų
- Density: 14.981 g/cm³

## Contents

```cif
# generated using pymatgen
data_FePt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.72800402
_cell_length_b   2.72800402
_cell_length_c   3.73735627
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FePt
_chemical_formula_sum   'Fe1 Pt1'
_cell_volume   27.81342754
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Fe  Fe0  1  0.00000000  0.00000000  0.00000000  1.0
  Pt  Pt1  1  0.50000000  0.50000000  0.50000000  1.0
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/847f4445-78ee-41b1-913b-5bd155c71b13/019f5b8d-2c97-7f9c-a386-8c748c1d5107.cif?v=1783947406689
- Over Ouro MCP: `download_asset(id="c2fce3d4-f408-48f9-958f-1c1879a853f3")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="c2fce3d4-f408-48f9-958f-1c1879a853f3")`, then pass it as `input_assets={"file": "c2fce3d4-f408-48f9-958f-1c1879a853f3"}`.
- From Python: `ouro.files.retrieve("c2fce3d4-f408-48f9-958f-1c1879a853f3")`