Regensburg 2022 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 13: Non-equilibrium Phenomena in Materials Induced by Electrical and Magnetic Fields 3

MM 13.7: Topical Talk

Dienstag, 6. September 2022, 12:30–13:00, H45

Field-assisted processing of magnetic materials — •Fernando Maccari and Oliver Gutfleisch — Technical University of Darmstadt, 64287 Darmstadt, Germany

Optimization of materials requires a precise control of processing parameters to achieve a desired combination of phases and microstructural features. The application of an external fields during synthesis, going beyond the classical use of only temperature and time, can be used as additional degree of freedom to promote densification, solid state phase transformation, intermetallic compounds and precipitates formation. This combination opens new possibilities to obtain highly tailored microstructures and improved properties.

Focusing on magnetic materials, this talk will provide an overview on how different length scales can be manipulated using external magnetic and electric field assisted processing techniques to create materials with enhanced functional properties. Aspects related to induced magnetic anisotropy and phase formation in soft and hard magnetic materials will be covered. Additionally, field driven coupled magnetic and phase transition is going to be addressed and exemplified in ferromagnetic shape memory Ni-Mn-Ga Heusler compound.