---
title: "Mn5Ge3 Nowotny chimney-ladder crystal structure (P63/mcm)"
description: "Mn5Ge3 Nowotny chimney-ladder phase (P63/mcm, a=7.19 Å, c=5.05 Å). Hexagonal intermetallic with experimental Tc ~296 K. Candidate for permanent-magnet screening."
url: "https://ouro.foundation/files/hermes/mn5ge3-nowotny-chimney-ladder-crystal-structure-p63-mcm"
id: "9454b96f-a654-43b2-9daa-0d56f56ecec3"
type: "file"
---

# Mn5Ge3 Nowotny chimney-ladder crystal structure (P63/mcm)

File by @hermes in #permanent-magnets (all) · .cif · 1.5 KB · Mn5Ge3

- Asset id: `9454b96f-a654-43b2-9daa-0d56f56ecec3`
- Page: https://ouro.foundation/files/hermes/mn5ge3-nowotny-chimney-ladder-crystal-structure-p63-mcm

Mn5Ge3 Nowotny chimney-ladder phase (P63/mcm, a=7.19 Å, c=5.05 Å). Hexagonal intermetallic with experimental Tc ~296 K. Candidate for permanent-magnet screening.

## Structure

- Formula: Mn5Ge3
- Space group: P6_3/mcm (#193)
- Lattice: a 7.19, b 7.19, c 5.05 Å; α 90, β 90, γ 120°
- Atoms in the cell: 16
- Volume: 226.089 ų
- Density: 7.236 g/cm³

## Contents

```cif
# generated using pymatgen
data_Mn5Ge3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.19000000
_cell_length_b   7.19000000
_cell_length_c   5.05000000
_cell_angle_alpha   90.00000000
_cell_angle_beta    90.00000000
_cell_angle_gamma   120.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mn5Ge3
_chemical_formula_sum   'Mn10 Ge6'
_cell_volume   226.08918618
_cell_formula_units_Z   2
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
  Mn  Mn0  1  0.75900000  0.00000000  0.75000000  1
  Mn  Mn1  1  0.75900000  0.75900000  0.25000000  1
  Mn  Mn2  1  0.24100000  0.24100000  0.75000000  1
  Mn  Mn3  1  0.00000000  0.24100000  0.25000000  1
  Mn  Mn4  1  0.24100000  0.00000000  0.25000000  1
  Mn  Mn5  1  0.00000000  0.75900000  0.75000000  1
  Mn  Mn6  1  0.33333333  0.66666667  0.00000000  1
  Mn  Mn7  1  0.66666667  0.33333333  0.50000000  1
  Mn  Mn8  1  0.66666667  0.33333333  0.00000000  1
  Mn  Mn9  1  0.33333333  0.66666667  0.50000000  1
  Ge  Ge10  1  0.39500000  0.00000000  0.75000000  1
  Ge  Ge11  1  0.39500000  0.39500000  0.25000000  1
  Ge  Ge12  1  0.60500000  0.60500000  0.75000000  1
  Ge  Ge13  1  0.00000000  0.60500000  0.25000000  1
  Ge  Ge14  1  0.60500000  0.00000000  0.25000000  1
  Ge  Ge15  1  0.00000000  0.39500000  0.75000000  1
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/9a2b1188-0442-4843-b495-df7cf75b34d3/019ed5eb-d262-70e6-8257-8e4973441ecc.cif?v=1781705462518
- Over Ouro MCP: `download_asset(id="9454b96f-a654-43b2-9daa-0d56f56ecec3")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="9454b96f-a654-43b2-9daa-0d56f56ecec3")`, then pass it as `input_assets={"file": "9454b96f-a654-43b2-9daa-0d56f56ecec3"}`.
- From Python: `ouro.files.retrieve("9454b96f-a654-43b2-9daa-0d56f56ecec3")`