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MA: Fachverband Magnetismus

MA 10: INNOMAG e.V. Prizes 2026 (Diplom-/Master and Ph.D. Thesis)

MA 10.1: Hauptvortrag

Montag, 9. März 2026, 15:00–15:20, POT/0112

Multi-field analysis of magnetic materials: Phase-field based simulations of magnetic domains and phase transition — •Mobina Alaeddini, Jörg Schröder, and Maximilian Vorwerk — Institut für Mechanik, Universität Duisburg-Essen, Essen, Deutschland

Rising global temperatures have triggered research into novel, efficient, and sustainable alternatives to conventional cooling technologies to tackle the rapidly increasing demand for air conditioning and the resulting strain on energy resources. Among these, novel cooling technologies exploit the magnetocaloric effect, in which the application of magnetic fields induces reversible thermal responses suitable for cooling. Despite its technological relevance, a comprehensive description of the coupled magnetocaloric behavior requires advanced modeling approaches. Current research focuses on understanding and optimizing the magnetocaloric response of materials such as Heusler alloys, which are among the most promising candidates for solid-state cooling. To investigate these effects in a controlled and quantitative manner, a multi-field variational phase-field framework based on finite elements is employed. The formulation relies on the time-dependent Ginzburg-Landau equation and incorporates magnetic, mechanical, and thermal contributions within a unified free-energy description governing the transformation from paramagnetic austenite to ferromagnetic martensite. This approach enables a detailed analysis of the coupled magnetic and structural evolution and provides a predictive framework for magnetocaloric material design.

Keywords: FEM; Micromagnetic; Phase-field modeling; Heusler alloys; magnetocaloric