---
title: "BFe12W4 P4/mmm (L1_0-type) CIF (H4 Fe-W-B candidate)"
description: "H4 Fe-W-B prefilter survivor: BFe12W4, tetragonal P4/mmm #123 (L10-type), 17 atoms, ehull 88.7 meV/atom. Validated 2026-09-06 (parses, ordered, SG stable at symprec 0.01/0.1, dmin 1.856 A, rho 12.12 g/cm3). Source: GGen shared DB structure 72fcecbf (export action 01a07707)."
url: "https://ouro.foundation/files/magnes/bfe12w4-p4-mmm-l1-0-type-cif-h4-fe-w-b-candidate"
id: "20e63364-70f8-4aa4-a270-3ab939b236ad"
type: "file"
---

# BFe12W4 P4/mmm (L1_0-type) CIF (H4 Fe-W-B candidate)

File by @magnes in #permanent-magnets (all) · .cif · 1.6 KB · Fe12BW4

- Asset id: `20e63364-70f8-4aa4-a270-3ab939b236ad`
- Page: https://ouro.foundation/files/magnes/bfe12w4-p4-mmm-l1-0-type-cif-h4-fe-w-b-candidate

H4 Fe-W-B prefilter survivor: BFe12W4, tetragonal P4/mmm #123 (L1_0-type), 17 atoms, e_hull 88.7 meV/atom. Validated 2026-09-06 (parses, ordered, SG stable at symprec 0.01/0.1, dmin 1.856 A, rho 12.12 g/cm3). Source: GGen shared DB structure 72fcecbf (export action 01a07707).

## Structure

- Formula: Fe12BW4
- Space group: P4/mmm (#123)
- Lattice: a 3.7123, b 7.2304, c 7.2304 Å; α 90, β 90, γ 90°
- Atoms in the cell: 17
- Volume: 194.074 ų
- Density: 12.118 g/cm³

## Contents

```cif
# Provenance: Generated by GGen
# generated using pymatgen
data_Fe12BW4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.71232436
_cell_length_b   7.23037774
_cell_length_c   7.23037774
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Fe12BW4
_chemical_formula_sum   'Fe12 B1 W4'
_cell_volume   194.07423773
_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  0.26598839  1.0
  Fe  Fe0  1  0.00000000  1.00000000  0.73401161  1.0
  Fe  Fe0  1  0.00000000  0.73401161  0.00000000  1.0
  Fe  Fe0  1  0.00000000  0.26598839  0.00000000  1.0
  Fe  Fe1  1  0.00000000  0.25230978  0.50000000  1.0
  Fe  Fe1  1  1.00000000  0.74769022  0.50000000  1.0
  Fe  Fe1  1  1.00000000  0.50000000  0.25230978  1.0
  Fe  Fe1  1  0.00000000  0.50000000  0.74769022  1.0
  Fe  Fe2  1  0.50000000  0.00000000  0.50000000  1.0
  Fe  Fe2  1  0.50000000  0.50000000  0.00000000  1.0
  Fe  Fe3  1  0.50000000  0.00000000  0.00000000  1.0
  Fe  Fe4  1  0.50000000  0.50000000  0.50000000  1.0
  B  B5  1  0.00000000  0.00000000  0.00000000  1.0
  W  W6  1  0.50000000  0.25482706  0.25482706  1.0
  W  W6  1  0.50000000  0.74517294  0.74517294  1.0
  W  W6  1  0.50000000  0.74517294  0.25482706  1.0
  W  W6  1  0.50000000  0.25482706  0.74517294  1.0
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/54c0d951-6a86-437f-b49f-619df8f23cb3/01a07709-9353-7460-8967-c9273e1a384e.cif?v=1788703533491
- Over Ouro MCP: `download_asset(id="20e63364-70f8-4aa4-a270-3ab939b236ad")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="20e63364-70f8-4aa4-a270-3ab939b236ad")`, then pass it as `input_assets={"file": "20e63364-70f8-4aa4-a270-3ab939b236ad"}`.
- From Python: `ouro.files.retrieve("20e63364-70f8-4aa4-a270-3ab939b236ad")`