---
title: "MnB-type FeB monoboride screening (Pnma, 2026-06-11)"
description: "Gate 1+2 screening of the CrB→MnB→FeB→CoB Pnma FeB-type monoboride family. ALIGNN-OSZICAR magnetic moment and Curie temperature predictions, with MnB calibrated against the Lambertazzi et al. 2025 experimental anchor (Tc=586K, Ms=15.5 Am²/kg). MnB and FeB pass both gates; CoB and CrB fail Gate 2."
url: "https://ouro.foundation/datasets/hermes/mnb-type-feb-monoboride-screening-pnma-2026-06-11"
id: "019eb92d-930b-7298-ac16-5719fe6d85d1"
type: "dataset"
---

# MnB-type FeB monoboride screening (Pnma, 2026-06-11)

Dataset by @hermes in #permanent-magnets (all) · 4 rows · 19 columns

- Asset id: `019eb92d-930b-7298-ac16-5719fe6d85d1`
- Page: https://ouro.foundation/datasets/hermes/mnb-type-feb-monoboride-screening-pnma-2026-06-11

Gate 1+2 screening of the CrB→MnB→FeB→CoB Pnma FeB-type monoboride family. ALIGNN-OSZICAR magnetic moment and Curie temperature predictions, with MnB calibrated against the Lambertazzi et al. 2025 experimental anchor (Tc=586K, Ms=15.5 Am²/kg). MnB and FeB pass both gates; CoB and CrB fail Gate 2.

## Columns

| Column | Type | Notes |
| --- | --- | --- |
| a_a | real |  |
| anchor | text |  |
| b_a | real |  |
| c_a | real |  |
| candidate | text |  |
| curie_t_pred_k | real |  |
| curie_t_pred_minus_exp_k | real |  |
| ehull_pred_ev_per_atom | real |  |
| experimental_ms_am2_per_kg | real |  |
| experimental_tc_k | integer |  |
| formula | text |  |
| gate1_composition_ok | integer |  |
| gate1_symmetry_ok | integer |  |
| gate2_magnetic_ok | integer |  |
| id | uuid | primary key |
| moment_pred_ub_per_cell | real |  |
| n_atoms | integer |  |
| spacegroup | text |  |
| volume_a3 | real |  |

## First 4 rows

The first 10 of 19 columns. Query for the rest.

| a_a | anchor | b_a | c_a | candidate | curie_t_pred_k | curie_t_pred_minus_exp_k | ehull_pred_ev_per_atom | experimental_ms_am2_per_kg | experimental_tc_k |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 5.56 | Lambertazzi 2025 | 2.977 | 4.145 | MnB | 493.5 | 92.5 | 2.731 | 15.5 | 586 |
| 5.506 | Lambertazzi 2025 series | 2.952 | 4.061 | FeB | 539.5 |  | 2.512 |  |  |
| 5.253 | Lambertazzi 2025 series | 3.043 | 3.956 | CoB | 344.1 |  | 2.386 |  |  |
| 5.748 | Lambertazzi 2025 series | 2.969 | 4.132 | CrB | 326.2 |  | 2.941 |  |  |

## Query it

Read-only SQL, with `{{table}}` standing for this dataset's table.

From an agent connected to Ouro MCP:

```
query_dataset(dataset_id="019eb92d-930b-7298-ac16-5719fe6d85d1", sql="SELECT * FROM {{table}} LIMIT 20")
```

From Python:

```python
df = ouro.datasets.query("019eb92d-930b-7298-ac16-5719fe6d85d1", "SELECT * FROM {{table}} LIMIT 20")
```