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The magnetic behavior of a rare earth substitute material has been studied

Researchers at the UPNA have studied the magnetic properties of a rare earth substitute material. The results have been published in two articles in Materials Today Nano and the Small magazines. The papers provide new insights into the magnetic properties of cobalt-doped iron oxide nanoparticles. These materials are of interest to contribute to the development of future magnetic technologies less dependent on rare earths.

Rare earths are strategic elements for technologies such as high-capacity permanent magnets used in electric motors, power generation systems and electronic devices. The search for alternative materials to rare earths is currently one of the scientific and technological priorities identified by the European Union to reduce its dependence on external supplies.

UPNA studies have studied how the incorporation of cobalt and its distribution within the crystalline structure modifies the magnetic behavior of nanoparticles. In particular, the embodiments provide a better understanding of the microscopic origin of magnetocrystalline anisotropy. This property is related to the stability of magnetization and is essential for the design of advanced magnetic materials.

To this end, the group used advanced characterization techniques based on synchrotron radiation and neutron diffraction, in collaboration with several international research centers. They have stated that the results obtained have provided new tools to understand and control the magnetic properties of nanostructured materials and to contribute to the rational development of future generations of magnetic materials.