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Ligand Passivated Core−Shell FePt@Co Nanomagnets Exhibiting Enhanced Energy Product
Chemistry of Materials
  • David J. Carnevale, Florida State University
  • Michael Shatruk, Florida State University
  • Geoffrey F. Strouse, Florida State University
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Systematic growth of a soft-magnet Co shell (0.6 to 2.7 nm thick) around a hard-magnet Fe0.65Pt0.35 core (5 nm in diameter) has been achieved in a one-pot microwave synthesis. This controlled growth led to a 4-fold enhancement in the energy product of the core–shell assembly as compared to the energy product of bare Fe0.65Pt0.35 nanoparticles. The simultaneous enhancement of coercivity and saturation moment reflects the onset of theoretically predicted exchange-spring behavior. The demonstration of nanoscale exchange-spring magnets can lead to improved high-performance magnet design for energy applications.


©2016 American Chemical Society

Additional Comments
NSF grant #: DMR-1507233; NSF Cooperative Agreement #: DMR-1157490
Citation Information
David J. Carnevale, Michael Shatruk and Geoffrey F. Strouse. "Ligand Passivated Core−Shell FePt@Co Nanomagnets Exhibiting Enhanced Energy Product" Chemistry of Materials Vol. 28 Iss. 15 (2016) p. 5480 - 5487 ISSN: 0897-4756
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