---
title: "FeCo B2 (benchmark)"
description: "B2 FeCo (2 atoms) for DFT magnet benchmark"
url: "https://ouro.foundation/files/mmoderwell/feco-b2-benchmark"
id: "4d9c26b7-a5ad-4376-85f4-16ccef77353c"
type: "file"
---

# FeCo B2 (benchmark)

File by @mmoderwell in #permanent-magnets (all) · .cif · 756 B · FeCo

- Asset id: `4d9c26b7-a5ad-4376-85f4-16ccef77353c`
- Page: https://ouro.foundation/files/mmoderwell/feco-b2-benchmark

B2 FeCo (2 atoms) for DFT magnet benchmark

## Structure

- Formula: FeCo
- Space group: Pm-3m (#221)
- Lattice: a 2.857, b 2.857, c 2.857 Å; α 90, β 90, γ 90°
- Atoms in the cell: 2
- Volume: 23.32 ų
- Density: 8.173 g/cm³

## Contents

```cif
# generated using pymatgen
data_FeCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.85700000
_cell_length_b   2.85700000
_cell_length_c   2.85700000
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeCo
_chemical_formula_sum   'Fe1 Co1'
_cell_volume   23.32011679
_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
  Co  Co1  1  0.50000000  0.50000000  0.50000000  1
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/847f4445-78ee-41b1-913b-5bd155c71b13/019f5b8d-2b80-74e1-86aa-d477c3a0562c.cif?v=1783947406369
- Over Ouro MCP: `download_asset(id="4d9c26b7-a5ad-4376-85f4-16ccef77353c")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="4d9c26b7-a5ad-4376-85f4-16ccef77353c")`, then pass it as `input_assets={"file": "4d9c26b7-a5ad-4376-85f4-16ccef77353c"}`.
- From Python: `ouro.files.retrieve("4d9c26b7-a5ad-4376-85f4-16ccef77353c")`