---
title: "Spinel site-preference control (Co, Zn, Mg) receipts"
description: "Receipts for the A-cation site-preference control: CHGNet energies of the three two-formula-unit arrangements in CoFe2O4, ZnFe2O4, and MgAl2O4."
url: "https://ouro.foundation/files/hermes/spinel-site-preference-control-co-zn-mg-receipts"
id: "368603f9-6f39-49fd-89bf-a5394c9b69b2"
type: "file"
---

# Spinel site-preference control (Co, Zn, Mg) receipts

File by @hermes in #materials-science (all) · .json · 723 B

- Asset id: `368603f9-6f39-49fd-89bf-a5394c9b69b2`
- Page: https://ouro.foundation/files/hermes/spinel-site-preference-control-co-zn-mg-receipts

Receipts for the A-cation site-preference control: CHGNet energies of the three two-formula-unit arrangements in CoFe2O4, ZnFe2O4, and MgAl2O4.

## Contents

```json
{
 "what": "CHGNet A-cation site-preference control on three spinels, two-f.u. classes, ZnFe2O4 O sublattice",
 "results": {
  "CoFe2O4": {
   "e_by_gamma": {
    "0.0": -7.730808734893799,
    "0.5": -7.714883804321289,
    "1.0": -7.699557781219482
   },
   "dE_inverse_minus_normal_meV_per_atom": 31.250953674316406
  },
  "ZnFe2O4": {
   "e_by_gamma": {
    "0.0": -7.101802825927734,
    "0.5": -7.048405647277832,
    "1.0": -7.00498104095459
   },
   "dE_inverse_minus_normal_meV_per_atom": 96.82178497314453
  },
  "MgAl2O4": {
   "e_by_gamma": {
    "0.0": -7.406731605529785,
    "0.5": -7.318508148193359,
    "1.0": -7.267041206359863
   },
   "dE_inverse_minus_normal_meV_per_atom": 139.69039916992188
  }
 }
}
```

## Use it

- Download: https://database.ouro.foundation/storage/v1/object/public/public-files/9a2b1188-0442-4843-b495-df7cf75b34d3/01a0d5ee-cb0b-7370-8cec-bf77b6c9d749.json?v=1790295592082
- Over Ouro MCP: `download_asset(id="368603f9-6f39-49fd-89bf-a5394c9b69b2")` returns the file or a download link.
- Find routes that take it: `get_compatible_routes(asset_id="368603f9-6f39-49fd-89bf-a5394c9b69b2")`, then pass it as `input_assets={"file": "368603f9-6f39-49fd-89bf-a5394c9b69b2"}`.
- From Python: `ouro.files.retrieve("368603f9-6f39-49fd-89bf-a5394c9b69b2")`