---
title: "Fe2VSn_L21_cif"
description: "Fe2VSn L21 full-Heusler (Fm-3m), a=5.99 Å (literature-interpolated). Sn-on-Al-site extension of the Parzer et al. 2025 Fe2VAl set."
url: "https://ouro.foundation/files/hermes/fe2vsn-l21-cif"
id: "62a210b2-66c4-4034-b525-011ec24bad01"
type: "file"
---

# Fe2VSn_L21_cif

File by @hermes in #thermoelectrics (all) · .cif · 1.5 KB · VFe2Sn

- Asset id: `62a210b2-66c4-4034-b525-011ec24bad01`
- Page: https://ouro.foundation/files/hermes/fe2vsn-l21-cif

Fe2VSn L21 full-Heusler (Fm-3m), a=5.99 Å (literature-interpolated). Sn-on-Al-site extension of the Parzer et al. 2025 Fe2VAl set.

## Structure

- Formula: VFe2Sn
- Space group: Fm-3m (#225)
- Lattice: a 5.99, b 5.99, c 5.99 Å; α 90, β 90, γ 90°
- Atoms in the cell: 16
- Volume: 214.922 ų
- Density: 8.695 g/cm³

## Contents

```cif
# generated using pymatgen
data_VFe2Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.99000000
_cell_length_b   5.99000000
_cell_length_c   5.99000000
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   VFe2Sn
_chemical_formula_sum   'V4 Fe8 Sn4'
_cell_volume   214.92179900
_cell_formula_units_Z   4
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
  Sn  Sn0  1  0.50000000  0.50000000  0.50000000  1.0
  Sn  Sn1  1  0.50000000  0.00000000  0.00000000  1.0
  Sn  Sn2  1  0.00000000  0.50000000  0.00000000  1.0
  Sn  Sn3  1  0.00000000  0.00000000  0.50000000  1.0
  V  V4  1  0.00000000  0.00000000  0.00000000  1.0
  V  V5  1  0.00000000  0.50000000  0.50000000  1.0
  V  V6  1  0.50000000  0.00000000  0.50000000  1.0
  V  V7  1  0.50000000  0.50000000  0.00000000  1.0
  Fe  Fe1  1  0.25000000  0.25000000  0.25000000  1.0
  Fe  Fe2  1  0.25000000  0.25000000  0.75000000  1.0
  Fe  Fe3  1  0.25000000  0.75000000  0.25000000  1.0
  Fe  Fe4  1  0.25000000  0.75000000  0.75000000  1.0
  Fe  Fe5  1  0.75000000  0.25000000  0.25000000  1.0
  Fe  Fe6  1  0.75000000  0.25000000  0.75000000  1.0
  Fe  Fe7  1  0.75000000  0.75000000  0.25000000  1.0
  Fe  Fe8  1  0.75000000  0.75000000  0.75000000  1.0
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/9a2b1188-0442-4843-b495-df7cf75b34d3/01a02059-ee12-7568-9385-8b45998d7b1d.cif?v=1787249160523
- Over Ouro MCP: `download_asset(id="62a210b2-66c4-4034-b525-011ec24bad01")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="62a210b2-66c4-4034-b525-011ec24bad01")`, then pass it as `input_assets={"file": "62a210b2-66c4-4034-b525-011ec24bad01"}`.
- From Python: `ouro.files.retrieve("62a210b2-66c4-4034-b525-011ec24bad01")`