Graph Neural Networks to Predict Coercivity of Hard Magnetic Microstructures
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arXiv
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| Hauptverfasser: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866911029805449216 |
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| author | Moustafa, Heisam Kovacs, Alexander Fischbacher, Johann Gusenbauer, Markus Ali, Qais Breth, Leoni Schrefl, Thomas Oezelt, Harald |
| author_facet | Moustafa, Heisam Kovacs, Alexander Fischbacher, Johann Gusenbauer, Markus Ali, Qais Breth, Leoni Schrefl, Thomas Oezelt, Harald |
| contents | Graph neural networks (GNN) are a promising tool to predict magnetic properties of large multi-grain structures, which can speed up the search for rare-earth free permanent magnets. In this paper, we use our magnetic simulation data to train a GNN to predict coercivity of hard magnetic microstructures. We evaluate the performance of the trained GNN and quantify its uncertainty. Subsequently, we reuse the GNN architecture for predicting the maximum energy product. Out-of-distribution predictions of coercivity are also performed, following feature engineering based on the observed dependence of coercivity on system size. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_23615 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Graph Neural Networks to Predict Coercivity of Hard Magnetic Microstructures Moustafa, Heisam Kovacs, Alexander Fischbacher, Johann Gusenbauer, Markus Ali, Qais Breth, Leoni Schrefl, Thomas Oezelt, Harald Computational Physics Graph neural networks (GNN) are a promising tool to predict magnetic properties of large multi-grain structures, which can speed up the search for rare-earth free permanent magnets. In this paper, we use our magnetic simulation data to train a GNN to predict coercivity of hard magnetic microstructures. We evaluate the performance of the trained GNN and quantify its uncertainty. Subsequently, we reuse the GNN architecture for predicting the maximum energy product. Out-of-distribution predictions of coercivity are also performed, following feature engineering based on the observed dependence of coercivity on system size. |
| title | Graph Neural Networks to Predict Coercivity of Hard Magnetic Microstructures |
| topic | Computational Physics |
| url | https://arxiv.org/abs/2506.23615 |