Published December 15, 2023 | Version v1
Project deliverable Open

PASSENGER D1.4 - Fabrication of high-coercive ferrite loose powder (jHc > 5.5 kOe) accompanied by a moderate decrease (<8%) in remanence for improved performed when decreasing operating temperature

  • 1. ROR icon MBN Nanomaterialia (Italy)
  • 2. ILPEA
  • 3. ROR icon IMDEA Nanoscience


Deliverable goal is to create improved Strontium Ferrite Powder based on an increase in coercivity and limited remanence loss with no use of critical raw materials (e.g. lanthanum and cobalt, as it is the case for high-quality commercial Sr-ferrite). Two strategies were therefore taken into consideration: ferrite powder for compounding/injection molding and for sintering, similarly to previous work reported in D1.3. The production process involves mixing of raw materials (iron oxide, strontium carbonate and additives) with water to form a slurry, which is then pumped in the high temperature ovens. The powder is then cooled, transported to the milling equipment and delivered to other PASSENGER partners for further characterisations and testing. Table 1 summarises the deliverable goals and the achieved values for the two applications.


This deliverable is currently under review by the European Commission.



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PASSENGER – Pilot Action for Securing a Sustainable European Next Generation of Efficient RE-free magnets 101003914
European Commission