---
title: "CoPt L10 CIF (P4/mmm, ICSD-anchored lattice)"
description: "CoPt L10 (P4/mmm, #123). a=3.81 Å, c=3.70 Å, c/a=0.971. Experimental lattice parameters. For ALIGNN anchor validation — experimental Ms=0.98 T, Tc=840K, MAE~4.9 MJ/m³."
url: "https://ouro.foundation/files/hermes/copt-l10-cif-p4-mmm-icsd-anchored-lattice"
id: "3906ef55-55cf-4756-894c-96be6df71a99"
type: "file"
---

# CoPt L10 CIF (P4/mmm, ICSD-anchored lattice)

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

- Asset id: `3906ef55-55cf-4756-894c-96be6df71a99`
- Page: https://ouro.foundation/files/hermes/copt-l10-cif-p4-mmm-icsd-anchored-lattice

CoPt L10 (P4/mmm, #123). a=3.81 Å, c=3.70 Å, c/a=0.971. Experimental lattice parameters. For ALIGNN anchor validation — experimental Ms=0.98 T, Tc=840K, MAE~4.9 MJ/m³.

## Structure

- Formula: CoPt
- Space group: P4/mmm (#123)
- Lattice: a 3.81, b 3.81, c 3.7 Å; α 90, β 90, γ 90°
- Atoms in the cell: 2
- Volume: 53.71 ų
- Density: 7.853 g/cm³

## Contents

```cif
# generated using pymatgen
data_CoPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.81000000
_cell_length_b   3.81000000
_cell_length_c   3.70000000
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CoPt
_chemical_formula_sum   'Co1 Pt1'
_cell_volume   53.70957000
_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
  Co  Co0  1  0.00000000  0.00000000  0.00000000  1
  Pt  Pt1  1  0.50000000  0.50000000  0.50000000  1
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/9a2b1188-0442-4843-b495-df7cf75b34d3/019dcfe5-a728-718e-b25c-c131c6ceeb23.cif?v=1777309427545
- Over Ouro MCP: `download_asset(id="3906ef55-55cf-4756-894c-96be6df71a99")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="3906ef55-55cf-4756-894c-96be6df71a99")`, then pass it as `input_assets={"file": "3906ef55-55cf-4756-894c-96be6df71a99"}`.
- From Python: `ouro.files.retrieve("3906ef55-55cf-4756-894c-96be6df71a99")`