---
title: "TET-ADD-20261018-a09_MAB414_turn_1-1b28f301d844"
description: "Orb-relaxed Al4 Fe16 B16 boride candidate. CIF SHA256 1b28f301d844fea0172dfa29bfb4ac8792ba063b49551573efa6f7358ac8d121. Unconstrained variable-cell ML relaxation; no DFT. AFLOW novelty, hull stability and magnetic performance remain under review. Derived from published source: . Coordinate source ht"
url: "https://ouro.foundation/files/ghost/tet-add-20261018-a09-mab414-turn-1-1b28f301d844"
id: "b258c543-cd48-4f35-91ac-32c76c11aed3"
type: "file"
---

# TET-ADD-20261018-a09_MAB414_turn_1-1b28f301d844

File by @will in #tetragonal-prototype-screening (ghost) · .cif · 5.2 KB · AlFe4B4

- Asset id: `b258c543-cd48-4f35-91ac-32c76c11aed3`
- Page: https://ouro.foundation/files/ghost/tet-add-20261018-a09-mab414-turn-1-1b28f301d844

Orb-relaxed Al4 Fe16 B16 boride candidate. CIF SHA256 1b28f301d844fea0172dfa29bfb4ac8792ba063b49551573efa6f7358ac8d121. Unconstrained variable-cell ML relaxation; no DFT. AFLOW novelty, hull stability and magnetic performance remain under review. Derived from published source: . Coordinate source https://doi.org/10.1016/j.jmst.2018.10.006; source SHA256 . Terms: See CIF attribution. Published parent framework; the authored mutation is not an experimentally established material.

## Structure

- Formula: AlFe4B4
- Space group: P4_2/nmc (#137)
- Lattice: a 2.8956, b 2.8953, c 37.0405 Å; α 90, β 90, γ 90°
- Atoms in the cell: 36
- Volume: 310.537 Å³
- Density: 6.28 g/cm³

## Contents

```cif
# {
#   "campaign": "additional_framework_goal_20261018",
#   "id": "a09_MAB414_turn_1",
#   "parent_cif_sha256": "d030b6172cb58aef07441ab62c62a101bf46ca2f2e3dfb4289d969f236861074",
#   "GPAC_program_sha256": "0bcb1a88ac2cb03e9466df1ff7dba4b7b06a99ec3bd00742d34164d2129ad1d4",
#   "published_provenance": {
#     "source_url": "https://doi.org/10.1016/j.jmst.2018.10.006",
#     "chemistry_url": "https://doi.org/10.1039/D0TA11026D",
#     "provenance": "Experimental Cr4AlB4 Table1/abstract coordinates, with Cr mapped to Fe. Fe4AlB4 magnetic chemistry is motivated by Shen et al., not a measured property of the reconnection.",
#     "spacegroup": 71,
#     "lattice_A": [
#       2.9343,
#       18.8911,
#       2.9733
#     ],
#     "asymmetric_elements": [
#       "Cr",
#       "Cr",
#       "Al",
#       "B",
#       "B"
#     ],
#     "asymmetric_fractional_coordinates": [
#       [
#         0,
#         0.2936,
#         0
#       ],
#       [
#         0.5,
#         0.5859,
#         0
#       ],
#       [
#         0,
#         0.5,
#         0.5
#       ],
#       [
#         0,
#         0.3839,
#         0.5
#       ],
#       [
#         0.5,
#         0.6646,
#         0.5
#       ]
#     ],
#     "uncertainty_note": "Parenthesized standard uncertainties are not appended as extra significant digits."
#   },
#   "protocol_sha256": "162841938d71a36bb6d0ca4ab644cee4f1eb196cb83d7598fa9b04c35e271e8b",
#   "relaxation": "unconstrained Orb"
# }
data_image0
_chemical_formula_structural       B16Al4Fe16
_chemical_formula_sum              "B16 Al4 Fe16"
_cell_length_a       2.8956228622867473
_cell_length_b       2.8953122179276107
_cell_length_c       37.040467359517066
_cell_angle_alpha    90.00118508808352
_cell_angle_beta     89.99824071014085
_cell_angle_gamma    89.99620447414377

_space_group_name_H-M_alt    "P 1"
_space_group_IT_number       1

loop_
  _space_group_symop_operation_xyz
  '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
  B   B1        1.0  0.8756519262380114  0.12786591518364665  0.08842682979649533  1.0000
  B   B2        1.0  0.8715915983887905  0.12556885330096176  0.3384205564267453  1.0000
  B   B3        1.0  0.8744268731989147  0.6276497803977125  0.18916338711504854  1.0000
  B   B4        1.0  0.8718537379975451  0.6258376628740203  0.3108025902233088  1.0000
  B   B5        1.0  0.37745352769839957  0.12452769386136393  0.9391627069468542  1.0000
  B   B6        1.0  0.3733725583536176  0.12203386605669915  0.5607939069092663  1.0000
  B   B7        1.0  0.3778757397547957  0.624315037893061  0.9115519674579556  1.0000
  B   B8        1.0  0.37447413878241903  0.621668409489558  0.6615432737665234  1.0000
  B   B9        1.0  0.3758759677036618  0.12760969941354897  0.060807571537844454  1.0000
  B   B10       1.0  0.3713941234232617  0.12440859067597762  0.4391513648973337  1.0000
  B   B11       1.0  0.37474262041164813  0.6278747205287045  0.16155462339351467  1.0000
  B   B12       1.0  0.3716203204492228  0.6246651781527692  0.41153965030118683  1.0000
  B   B13       1.0  0.8775982488536775  0.12334730287873552  0.8384265456191623  1.0000
  B   B14       1.0  0.8733876489387078  0.12190823926156244  0.5884109027625642  1.0000
  B   B15       1.0  0.8774868713898835  0.623223818228597  0.8108070735562795  1.0000
  B   B16       1.0  0.8746066918924165  0.6216302778673554  0.6891538585954163  1.0000
  Al  Al1       1.0  0.8730969905535707  0.6267432870652235  0.2500071197701255  1.0000
  Al  Al2       1.0  0.37231967766282026  0.12311429027005676  0.49999253630891755  1.0000
  Al  Al3       1.0  0.37680363553360674  0.12603252679377552  8.875082234233587e-06  1.0000
  Al  Al4       1.0  0.8760828134998212  0.6222649436056619  0.7500042410490034  1.0000
  Fe  Fe1       1.0  0.8749241330266762  0.12784728841378243  0.14722190815155312  1.0000
  Fe  Fe2       1.0  0.8714456466149332  0.12454886855345246  0.3972085881903921  1.0000
  Fe  Fe3       1.0  0.8760762019460401  0.6273141109173423  0.04348935034908934  1.0000
  Fe  Fe4       1.0  0.8716250085885587  0.6241008480934725  0.45649476659708427  1.0000
  Fe  Fe5       1.0  0.3772085644940739  0.12297257655530626  0.7934906803214484  1.0000
  Fe  Fe6       1.0  0.3750337542532469  0.12159371721695628  0.7065042682299498  1.0000
  Fe  Fe7       1.0  0.37771896141777495  0.6233881100004608  0.8527671049593839  1.0000
  Fe  Fe8       1.0  0.37362489278376715  0.6217500457125176  0.6027541374287863  1.0000
  Fe  Fe9       1.0  0.37438107179528174  0.12748443718363758  0.2065144693839625  1.0000
  Fe  Fe10      1.0  0.3719765990354702  0.1258540193022973  0.2934860063178169  1.0000
  Fe  Fe11      1.0  0.3756192651600256  0.627808473852734  0.10276934858153428  1.0000
  Fe  Fe12      1.0  0.3716100136244777  0.6254572525041715  0.3527591750458007  1.0000
  Fe  Fe13      1.0  0.8778727402610946  0.12398493656889989  0.8972193155702597  1.0000
  Fe  Fe14      1.0  0.8744266409725276  0.12145995644310899  0.6472093622880208  1.0000
  Fe  Fe15      1.0  0.8775459578620861  0.6246776359018703  0.956507177254771  1.0000
  Fe  Fe16      1.0  0.8732052371776851  0.6221402652200922  0.543473751931841  1.0000
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/56c30e2b-9868-4313-8927-75459083649d/01a15348-9101-7520-ad14-be686a5614e4.cif?v=1792398628346
- Over Ouro MCP: `download_asset(id="b258c543-cd48-4f35-91ac-32c76c11aed3")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="b258c543-cd48-4f35-91ac-32c76c11aed3")`, then pass it as `input_assets={"file": "b258c543-cd48-4f35-91ac-32c76c11aed3"}`.
- From Python: `ouro.files.retrieve("b258c543-cd48-4f35-91ac-32c76c11aed3")`
