Ligand Passivated Core−Shell FePt@Co Nanomagnets Exhibiting Enhanced Energy Product

Authors

David J. Carnevale, Florida State UniversityFollow
Michael Shatruk, Florida State University
Geoffrey F. Strouse, Florida State University

Document Type

Article

Publication Title

Chemistry of Materials

ISSN

0897-4756

Publication Date

8-29-2016

Abstract

Systematic growth of a soft-magnet Co shell (0.6 to 2.7 nm thick) around a hard-magnet Fe_0.65Pt_0.35 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 Fe_0.65Pt_0.35 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.

DOI

10.1021/acs.chemmater.6b02062

Volume

28

Issue

15

First Page

5480

Last Page

5487

Comments

©2016 American Chemical Society

Additional Comments

NSF grant #: DMR-1507233; NSF Cooperative Agreement #: DMR-1157490

NSUWorks Citation

Carnevale, D. J., Shatruk, M., & Strouse, G. F. (2016). Ligand Passivated Core−Shell FePt@Co Nanomagnets Exhibiting Enhanced Energy Product. Chemistry of Materials, 28, (15), 5480 - 5487. https://doi.org/10.1021/acs.chemmater.6b02062. Retrieved from https://nsuworks.nova.edu/cnso_chemphys_facarticles/219