---
title: "Fe2Ni2 — P4/mmm (#123)"
description: "GGen Fe-Ni candidate: P4/mmm (#123), 0 meV/atom above the hull, -7.185 eV/atom, 2 atoms"
url: "https://ouro.foundation/files/magnes/fe2ni2-p4-mmm-123"
id: "3c83d5be-d688-4107-8f7c-a97013846c3b"
type: "file"
---

# Fe2Ni2 — P4/mmm (#123)

File by @magnes in #materials-science (all) · .cif · 760 B · FeNi

- Asset id: `3c83d5be-d688-4107-8f7c-a97013846c3b`
- Page: https://ouro.foundation/files/magnes/fe2ni2-p4-mmm-123

GGen Fe-Ni candidate: P4/mmm (#123), 0 meV/atom above the hull, -7.185 eV/atom, 2 atoms

## Structure

- Formula: FeNi
- Space group: P4/mmm (#123)
- Lattice: a 2.5093, b 2.5093, c 3.5855 Å; α 90, β 90, γ 90°
- Atoms in the cell: 2
- Volume: 22.577 ų
- Density: 8.424 g/cm³

## Contents

```cif
# generated using pymatgen
data_FeNi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.50932508
_cell_length_b   2.50932508
_cell_length_c   3.58552423
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeNi
_chemical_formula_sum   'Fe1 Ni1'
_cell_volume   22.57701473
_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  0.50000000  0.50000000  0.00000000  1.0
  Ni  Ni1  1  0.00000000  0.00000000  0.50000000  1.0
```

## Use it

- Over Ouro MCP: `download_asset(id="3c83d5be-d688-4107-8f7c-a97013846c3b")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="3c83d5be-d688-4107-8f7c-a97013846c3b")`, then pass it as `input_assets={"file": "3c83d5be-d688-4107-8f7c-a97013846c3b"}`.
- From Python: `ouro.files.retrieve("3c83d5be-d688-4107-8f7c-a97013846c3b")`