---
title: "FePt (P4/mmm)"
description: "FePt (best of 5 space groups, final: P4/mmm #123, optimized: 407 steps, cell relaxed, symmetry refined)"
url: "https://ouro.foundation/files/mmoderwell/fept-p4-mmm"
id: "f121751b-c2a7-4c77-aeb1-85b9f76ef970"
type: "file"
---

# FePt (P4/mmm)

File by @mmoderwell in #materials-science (all) · .cif · 1015 B · FePt

- Asset id: `f121751b-c2a7-4c77-aeb1-85b9f76ef970`
- Page: https://ouro.foundation/files/mmoderwell/fept-p4-mmm

FePt (best of 5 space groups, final: P4/mmm #123, optimized: 407 steps, cell relaxed, symmetry refined)

## Structure

- Formula: FePt
- Space group: P4/mmm (#123)
- Lattice: a 3.237, b 3.237, c 2.7452 Å; α 90, β 90, γ 90°
- Atoms in the cell: 2
- Volume: 28.765 ų
- Density: 14.486 g/cm³

## Contents

```cif
# generated using pymatgen
data_FePt
_symmetry_space_group_name_H-M   P4/mmm
_cell_length_a   3.23699487
_cell_length_b   3.23699487
_cell_length_c   2.74521306
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   123
_chemical_formula_structural   FePt
_chemical_formula_sum   'Fe1 Pt1'
_cell_volume   28.76471514
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, -z'
  3  '-y, x, z'
  4  'y, -x, -z'
  5  '-x, -y, z'
  6  'x, y, -z'
  7  'y, -x, z'
  8  '-y, x, -z'
  9  'x, -y, -z'
  10  '-x, y, z'
  11  '-y, -x, -z'
  12  'y, x, z'
  13  '-x, y, -z'
  14  'x, -y, z'
  15  'y, x, -z'
  16  '-y, -x, 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  0.50000000  1
  Pt  Pt1  1  0.00000000  0.00000000  0.00000000  1
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/847f4445-78ee-41b1-913b-5bd155c71b13/3b97c2a3-9d55-496b-9a72-8396b959b30f.cif?v=1777901452382
- Over Ouro MCP: `download_asset(id="f121751b-c2a7-4c77-aeb1-85b9f76ef970")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="f121751b-c2a7-4c77-aeb1-85b9f76ef970")`, then pass it as `input_assets={"file": "f121751b-c2a7-4c77-aeb1-85b9f76ef970"}`.
- From Python: `ouro.files.retrieve("f121751b-c2a7-4c77-aeb1-85b9f76ef970")`