What is it about?
Nanocomposites of Al-doped Barium Ferrites mixed with Nickel Ferrite were synthesized and characterized using various techniques. We investigated the role of cluster microstructure on the exchange coupling interaction between magnetically hard and soft phases in nanostructured composites consisting of Al-doped barium ferrites mixed with nickel ferrite.
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Why is it important?
Our results indicate that the size of the clusters is an important factor in determining the strength of the exchange coupling interaction. Our findings have implications for designing and optimizing magnetic materials with enhanced exchange coupling interaction.
Perspectives
Green technologies heavily depend on rare earth magnets with Sm–Co and Nd-Fe-B that offer the best (BH)max,s to achieve a reduction in CO2 emissions. However, meeting the soaring demand for rare earths poses significant challenges as only a few countries have direct access to them. Therefore, materials such as M-type magnetic hexaferrites present attractive magnetic properties (saturation magnetization (Ms) up to 60 emu/g and coercive field (Hc) up to 7000 Oe) to serve as replacements for rare-earth magnets.
Dr. Ing. Marcelo R. Pagnola
INTECIN (UBA - CONICET)
Read the Original
This page is a summary of: The role of cluster microstructure on the exchange coupling interaction between magnetically hard and soft phases, Solid State Sciences, September 2023, Elsevier,
DOI: 10.1016/j.solidstatesciences.2023.107286.
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