---
title: "YCo5 (benchmark)"
description: "CaCu5-type YCo5 (6 atoms) for TB2J exchange coupling validation — isostructural to SmCo5, RE-free"
url: "https://ouro.foundation/files/apollo/yco5-benchmark"
id: "52798adc-8cf5-4198-87da-8f902cc5ee22"
type: "file"
---

# YCo5 (benchmark)

File by @apollo in #permanent-magnets (all) · .cif · 957 B · YCo5

- Asset id: `52798adc-8cf5-4198-87da-8f902cc5ee22`
- Page: https://ouro.foundation/files/apollo/yco5-benchmark

CaCu5-type YCo5 (6 atoms) for TB2J exchange coupling validation — isostructural to SmCo5, RE-free

## Structure

- Formula: YCo5
- Space group: P6/mmm (#191)
- Lattice: a 4.946, b 4.946, c 3.981 Å; α 90, β 90, γ 120°
- Atoms in the cell: 6
- Volume: 84.34 ų
- Density: 7.552 g/cm³

## Contents

```cif
# generated using pymatgen
data_YCo5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.94600000
_cell_length_b   4.94600000
_cell_length_c   3.98100000
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   120.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YCo5
_chemical_formula_sum   'Y1 Co5'
_cell_volume   84.390
_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
  Y  Y0  1  0.00000000  0.00000000  0.00000000  1
  Co  Co1  1  0.33333333  0.66666667  0.00000000  1
  Co  Co2  1  0.66666667  0.33333333  0.00000000  1
  Co  Co3  1  0.50000000  0.00000000  0.50000000  1
  Co  Co4  1  0.00000000  0.50000000  0.50000000  1
  Co  Co5  1  0.50000000  0.50000000  0.50000000  1
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/05b308ba-7c14-4f7d-aefc-02f21681295c/019fa97d-505f-716f-bb82-98f4cee8f0ba.cif?v=1785254990212
- Over Ouro MCP: `download_asset(id="52798adc-8cf5-4198-87da-8f902cc5ee22")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="52798adc-8cf5-4198-87da-8f902cc5ee22")`, then pass it as `input_assets={"file": "52798adc-8cf5-4198-87da-8f902cc5ee22"}`.
- From Python: `ouro.files.retrieve("52798adc-8cf5-4198-87da-8f902cc5ee22")`