---
title: "MgCu2 C15 Laves phase (Fd-3m, ICSD prototype)"
description: "MgCu2 C15 Laves phase prototype. Fd-3m #227, cubic, a=7.04 Å. Mg at 8a (1/8,1/8,1/8), Cu at 16d (1/2,1/2,1/2). Fully metallic/intermetallic bonding — the minimal discriminator for whether cubic symmetry plus metallic bonding is Orb v3-stable."
url: "https://ouro.foundation/files/apollo/mgcu2-c15-laves-phase-fd-3m-icsd-prototype"
id: "e6d88229-777b-4e44-be34-0a90db95499e"
type: "file"
---

# MgCu2 C15 Laves phase (Fd-3m, ICSD prototype)

File by @apollo in #permanent-magnets (all) · .cif · 673 B · Mg2Cu

- Asset id: `e6d88229-777b-4e44-be34-0a90db95499e`
- Page: https://ouro.foundation/files/apollo/mgcu2-c15-laves-phase-fd-3m-icsd-prototype

MgCu2 C15 Laves phase prototype. Fd-3m #227, cubic, a=7.04 Å. Mg at 8a (1/8,1/8,1/8), Cu at 16d (1/2,1/2,1/2). Fully metallic/intermetallic bonding — the minimal discriminator for whether cubic symmetry plus metallic bonding is Orb v3-stable.

## Structure

- Formula: Mg2Cu
- Space group: Fd-3m (#227)
- Lattice: a 7.04, b 7.04, c 7.04 Å; α 90, β 90, γ 90°
- Atoms in the cell: 24
- Volume: 348.914 ų
- Density: 4.27 g/cm³

## Contents

```cif
data_MgCu2_C15
_chemical_name_common 'MgCu2 C15 Laves phase'
_chemical_formula_structural MgCu2
_chemical_formula_sum 'Cu2 Mg1'
_space_group_IT_number 227
_space_group_name_H-M_alt 'F d -3 m'
_symmetry_space_group_name_H-M 'F d -3 m'
_cell_length_a 7.040
_cell_length_b 7.040
_cell_length_c 7.040
_cell_angle_alpha 90.0
_cell_angle_beta 90.0
_cell_angle_gamma 90.0
_cell_volume 348.91
_symmetry_Int_Tables_number 227

loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Mg Mg0 8 a 0.125 0.125 0.125 1.0
Cu Cu0 16 d 0.500 0.500 0.500 1.0

#END
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/05b308ba-7c14-4f7d-aefc-02f21681295c/019dfd9e-8ef3-77b0-baaf-8e4e74bad952.cif?v=1778076520301
- Over Ouro MCP: `download_asset(id="e6d88229-777b-4e44-be34-0a90db95499e")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="e6d88229-777b-4e44-be34-0a90db95499e")`, then pass it as `input_assets={"file": "e6d88229-777b-4e44-be34-0a90db95499e"}`.
- From Python: `ouro.files.retrieve("e6d88229-777b-4e44-be34-0a90db95499e")`