Machine learning guided design of single-molecule magnets for magnetocaloric applications
Abstract
We present a data-driven approach to predict entropy changes (ΔS) in small magnetic fields in single-molecule magnets (SMMs) relevant to their application as magnetocaloric refrigerants. We construct a database of SMMs with a representation scheme incorporating aspects related to dimensionality, structure, local coordination environment, ideal total spin of magnetic ions, ligand type, and linking chemistry. We train machine learning models for predicting the entropy change as a function of structure and chemistry and use the models to arrive at ΔS for hypothetical molecules. We also identify key descriptors that affect the entropy change, thus providing insights into designing tailored SMMs with improved magnetocaloric properties.
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The likelihood of a TMC to exhibit spin-crossover behavior has been predicted based on the ligand nitrogen-nitrogen separation, and similar features have been invoked for predicting single-molecule magnet behavior.
“The likelihood of a TMC to exhibit spin-crossover behavior has been predicted based on the ligand nitrogen-nitrogen separation (83), and similar features have been invoked for predicting single-molecule magnet behavior (84).”
From Machine Learning for the Discovery, Design, and Engineering of Materials. (2022) · cites this paper as [84]
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- Authors
- Holleis, L., Shivaram, B. S., & Balachandran, P. V.
- Affiliations
- University of Virginia (US)
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2019-06-03
- Volume
- 114
- Issue
- 22
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2952673586
- Cited by
- 29
- References
- 58
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 3 · 2023: 3 · 2022: 6 · 2021: 3 · 2020: 10
- FWCI
- 1.47
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Applied Physics Letters (publishedVersion)
- Topics
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Magnetism in coordination complexes
- Physical Sciences › Materials Science › Materials Chemistry › Machine Learning in Materials Science
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Magnetic and transport properties of perovskites and related materials
- Keywords
- single-molecule magnets, magnetocaloric effect, machine learning, molecular design, magnetic refrigeration, structural descriptors, coordination environment, ligand chemistry
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