During her studies, Amalie P. Laursen has explored a novel and energy-efficient synthesis approach for producing ferrite magnets. The synthesis of permanent magnets requires significant control over the atomic structure, size, and alignment of the crystallites. Amalie studied how the anisotropic shape of various iron oxides could be used for introducing the desired alignment in ferrite magnets. She also investigated the effectiveness of SiO₂ as an additive for controlling the crystallite size.

The research findings have contributed to the understanding of how aligned ferrite magnets are formed and have demonstrated that magnets with comparable performance to industrially produced ferrite magnets can be synthesized by the explored approach where several energy-intensive synthesis steps are avoided. 

The PhD degree was completed at the Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO), Faculty of Natural Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Friday 8 May 2026 at 10.15.
Place: Building 1534, room 125, Auditorium F, Department of Mathematics, Ny Munkegade 120, Aarhus University, 8000, Aarhus C.
Tile of dissertation: Understanding the Effect of Anisotropic Nanostructured Iron Oxide Precursors on the Formation of M- and W-Type Hexaferrite Magnets
Contact information: Amalie P. Laursen, email: amalpovlsen@gmail.com, tel.:+45 31271499.
Members of the assessment committee: 
Lead Scientist Søren Dahl, Topsøe, Danmark.
Senior Academic Counselor Andreas Houben, Institute of Inorganic Chemistry RWTH Aachen University, Germany.
Associate Professor Martin Bremholm, Department of Chemistry, Aarhus University.
Supervisor: Professor Mogens Christensen, Department of Chemistry and iNANO, Aarhus University.
Language: The PhD dissertation will be defended in English.

The defence is public.
The PhD thesis is available for reading at the Graduate School of Natural Sciences/GSNS, Ny Munkegade 120, building 1521, 8000 Aarhus C.