Journal
CHEMISTRY OF MATERIALS
Volume 28, Issue 15, Pages 5480-5487Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.6b02062
Keywords
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Funding
- National Science Foundation [DMR-1507233, DMR-1157490]
- Florida State University Research Foundation
- National High Magnetic Field Laboratory
- State of Florida
- Florida State University
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1507233] Funding Source: National Science Foundation
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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.
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