---
title: "Gd metal (mp-155, P6_3/mmc)"
description: "Materials Project GGA structure of hcp Gd, unmodified. Measured: 7.55 μB/atom, μ0Ms ≈ 2.66 T at 0 K, Tc = 293 K. Reference anchor for the Gd magnet premise check."
url: "https://ouro.foundation/files/mmoderwell/gd-metal-mp-155-p6-3-mmc"
id: "0dbec8bc-b711-4e64-b419-86d9bfe03e69"
type: "file"
---

# Gd metal (mp-155, P6_3/mmc)

File by @mmoderwell in #permanent-magnets (all) · .cif · 725 B · Gd

- Asset id: `0dbec8bc-b711-4e64-b419-86d9bfe03e69`
- Page: https://ouro.foundation/files/mmoderwell/gd-metal-mp-155-p6-3-mmc

Materials Project GGA structure of hcp Gd, unmodified. Measured: 7.55 μB/atom, μ0Ms ≈ 2.66 T at 0 K, Tc = 293 K. Reference anchor for the Gd magnet premise check.

## Structure

- Formula: Gd
- Space group: P6_3/mmc (#194)
- Lattice: a 3.6419, b 3.6419, c 5.9017 Å; α 90, β 90, γ 120°
- Atoms in the cell: 2
- Volume: 67.791 ų
- Density: 7.704 g/cm³

## Contents

```cif
# generated using pymatgen
data_Gd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.641934
_cell_length_b   3.641932
_cell_length_c   5.901715
_cell_angle_alpha   90.000000
_cell_angle_beta   90.000000
_cell_angle_gamma   119.999999
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Gd
_chemical_formula_sum   Gd2
_cell_volume   67.791103
_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
  Gd  Gd0  1  0.333333  0.666667  0.250000  1.0
  Gd  Gd1  1  0.666667  0.333333  0.750000  1.0
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/847f4445-78ee-41b1-913b-5bd155c71b13/c06163c2-2fd6-4992-a0bd-bef6a0b3cea3.cif?v=1790637415874
- Over Ouro MCP: `download_asset(id="0dbec8bc-b711-4e64-b419-86d9bfe03e69")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="0dbec8bc-b711-4e64-b419-86d9bfe03e69")`, then pass it as `input_assets={"file": "0dbec8bc-b711-4e64-b419-86d9bfe03e69"}`.
- From Python: `ouro.files.retrieve("0dbec8bc-b711-4e64-b419-86d9bfe03e69")`