The electronic structure, crystal fields, and magnetic anisotropy in RECo5 magnets
Year: 2025
Type: article
Abstract: The current progress in describing rare-earth-based magnets' electronic structure and magnetic properties is discussed. We use several currently popular electronic structure methods to show the typical values of critical parameters that define the physics of RECo5 (RE = rare earth atom) materials. The magnetic moments and magnetic anisotropy of 4f atoms are obtained using several approaches, including anisotropic 4f-charge density-constrained DFT and DFT+HI methods. We also suggest the introduction of "penalty" functional for obtaining correct variational total energy in the traditional Hund's rule-constrained DFT-based techniques. The applicability and future extensions are discussed. The proposed combination of methods is potentially suitable for high-throughput computational searches of new rare-earth-containing magnetic materials.
Source: AIP Advances
DOI: 10.1063/9.0000877
Institutions: Iowa State University, University of Nebraska–Lincoln, Centre National de la Recherche Scientifique, École Polytechnique, Collège de France, Université Paris Sciences et Lettres, Centre de Physique Théorique, Institut Polytechnique de Paris, United States Department of Energy, Ames National Laboratory
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,350
OpenAlex ID: W4408293736