---
title: "Zr₆Fe₁₆Si₇C, PBE-relaxed (carbon-filled G phase, Fm-3m)"
description: "New carbon-filled G phase, 30-atom primitive cell relaxed in PBE (ABACUS, TZDP, k-spacing 0.2, forces < 0.04 eV/Å). 18.2 meV/atom below Zr₆Fe₁₆Si₇ + ZrC + Zr₂Fe₂Si₂C + Fe₃Si; weakly magnetic; no imaginary phonon modes. Relaxed from the Orb geometry in this file's family. Sun-tetragonal campaign, loo"
url: "https://ouro.foundation/files/mmoderwell/zr6fe16si7c-pbe-relaxed-carbon-filled-g-phase-fm-3m"
id: "4866284b-b9ba-4236-9a94-fc8538b742e3"
type: "file"
---

# Zr₆Fe₁₆Si₇C, PBE-relaxed (carbon-filled G phase, Fm-3m)

File by @mmoderwell in #permanent-magnets (all) · .cif · 3.2 KB · Zr6Fe16Si7C

- Asset id: `4866284b-b9ba-4236-9a94-fc8538b742e3`
- Page: https://ouro.foundation/files/mmoderwell/zr6fe16si7c-pbe-relaxed-carbon-filled-g-phase-fm-3m

New carbon-filled G phase, 30-atom primitive cell relaxed in PBE (ABACUS, TZDP, k-spacing 0.2, forces < 0.04 eV/Å). 18.2 meV/atom below Zr₆Fe₁₆Si₇ + ZrC + Zr₂Fe₂Si₂C + Fe₃Si; weakly magnetic; no imaginary phonon modes. Relaxed from the Orb geometry in this file's family. Sun-tetragonal campaign, loop 5.

## Structure

- Formula: Zr6Fe16Si7C
- Space group: Fm-3m (#225)
- Lattice: a 8.1027, b 8.1024, c 8.1026 Å; α 60, β 60, γ 60°
- Atoms in the cell: 30
- Volume: 376.147 Å³
- Density: 7.282 g/cm³

## Contents

```cif
# generated using pymatgen
data_Zr6Fe16Si7C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.10270617
_cell_length_b   8.10236274
_cell_length_c   8.10259929
_cell_angle_alpha   60.00129323
_cell_angle_beta   60.00195303
_cell_angle_gamma   59.99873929
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Zr6Fe16Si7C
_chemical_formula_sum   'Zr6 Fe16 Si7 C1'
_cell_volume   376.14704353
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_type_symbol
 _atom_type_oxidation_number
  Zr  0.0
  Fe  0.0
  Si  0.0
  C  0.0
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
  Zr  Zr0  1  0.70136925  0.29864925  0.29859130  1.0
  Zr  Zr1  1  0.29876413  0.70123906  0.70132420  1.0
  Zr  Zr2  1  0.29873409  0.70127652  0.29869317  1.0
  Zr  Zr3  1  0.70130430  0.29872785  0.70130136  1.0
  Zr  Zr4  1  0.29870866  0.29866709  0.70132527  1.0
  Zr  Zr5  1  0.70128319  0.70123227  0.29874888  1.0
  Fe  Fe6  1  0.12146487  0.12149190  0.12137203  1.0
  Fe  Fe7  1  0.87859859  0.87854501  0.87858806  1.0
  Fe  Fe8  1  0.87861938  0.36427703  0.87854962  1.0
  Fe  Fe9  1  0.12140710  0.63571965  0.12141212  1.0
  Fe  Fe10  1  0.63565217  0.12141450  0.12148431  1.0
  Fe  Fe11  1  0.36425110  0.87859346  0.87854621  1.0
  Fe  Fe12  1  0.87849510  0.87846118  0.36440531  1.0
  Fe  Fe13  1  0.12146052  0.12136939  0.63574267  1.0
  Fe  Fe14  1  0.67673040  0.67674963  0.67673309  1.0
  Fe  Fe15  1  0.32329426  0.32329042  0.32328369  1.0
  Fe  Fe16  1  0.32329373  0.03018702  0.32322881  1.0
  Fe  Fe17  1  0.67669201  0.96994496  0.67665495  1.0
  Fe  Fe18  1  0.96980139  0.67682673  0.67668063  1.0
  Fe  Fe19  1  0.03024107  0.32329979  0.32323732  1.0
  Fe  Fe20  1  0.32328384  0.32331666  0.03018300  1.0
  Fe  Fe21  1  0.67673835  0.67681193  0.96971937  1.0
  Si  Si22  1  0.99994288  0.49997068  0.99999388  1.0
  Si  Si23  1  0.50004354  0.50004654  0.99997877  1.0
  Si  Si24  1  0.49990548  0.99996057  0.50004381  1.0
  Si  Si25  1  0.00002260  0.00009164  0.49992691  1.0
  Si  Si26  1  0.99998362  0.49993512  0.50008149  1.0
  Si  Si27  1  0.49997432  0.00000694  0.99998612  1.0
  Si  Si28  1  0.99993554  0.00003340  0.00015212  1.0
  C  C29  1  0.50000454  0.49986400  0.50003035  1.0
loop_
 _atom_site_moment_label
 _atom_site_moment_crystalaxis_x
 _atom_site_moment_crystalaxis_y
 _atom_site_moment_crystalaxis_z
  Fe6  0.00000000  0.00000000  1.33510000
  Fe7  0.00000000  0.00000000  1.34280000
  Fe8  0.00000000  0.00000000  1.33590000
  Fe9  0.00000000  0.00000000  1.34230000
  Fe10  0.00000000  0.00000000  1.33850000
  Fe11  0.00000000  0.00000000  1.33850000
  Fe12  0.00000000  0.00000000  1.33810000
  Fe13  0.00000000  0.00000000  1.33960000
  Fe14  0.00000000  0.00000000  -0.26490000
  Fe15  0.00000000  0.00000000  -0.26510000
  Fe16  0.00000000  0.00000000  -0.26630000
  Fe17  0.00000000  0.00000000  -0.26710000
  Fe18  0.00000000  0.00000000  -0.26530000
  Fe19  0.00000000  0.00000000  -0.26500000
  Fe20  0.00000000  0.00000000  -0.26550000
  Fe21  0.00000000  0.00000000  -0.26470000
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/847f4445-78ee-41b1-913b-5bd155c71b13/01a1d71e-7195-7915-b577-4b5440c8b5b4.cif?v=1794610657155
- Over Ouro MCP: `download_asset(id="4866284b-b9ba-4236-9a94-fc8538b742e3")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="4866284b-b9ba-4236-9a94-fc8538b742e3")`, then pass it as `input_assets={"file": "4866284b-b9ba-4236-9a94-fc8538b742e3"}`.
- From Python: `ouro.files.retrieve("4866284b-b9ba-4236-9a94-fc8538b742e3")`
