Stabilizing Fe Nanoparticles in the SmCo5 Matrix | Zendy

Bo Shen | Zendy; Adriana MendozaGarcia | Zendy; Sarah E. Baker | Zendy; S. McCall | Zendy; Chao Yu | Zendy; Liheng Wu | Zendy; Shouheng Sun | Zendy

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Stabilizing Fe Nanoparticles in the SmCo₅ Matrix

Author(s) -

Bo Shen,

Adriana MendozaGarcia,

Sarah E. Baker,

S. McCall,

Chao Yu,

Liheng Wu,

Shouheng Sun

Publication year - 2017

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/acs.nanolett.7b02593

Subject(s) - nanoparticle , materials science , matrix (chemical analysis) , nanotechnology , chemical engineering , chemistry , crystallography , composite material , engineering

We report a new strategy for stabilizing Fe nanoparticles (NPs) in the preparation of SmCo 5 -Fe nanocomposites. We coat the presynthesized Fe NPs with SiO 2 and assemble the Fe/SiO 2 NPs with Sm-Co-OH to form a mixture. After reductive annealing at 850 °C in the presence of Ca, we obtain SmCo 5 -Fe/SiO 2 composites. Following aqueous NaOH washing and compaction, we produced exchange-coupled SmCo 5 -Fe nanocomposites with Fe NPs controlled at 12 nm. Our work demonstrates a successful strategy of stabilizing high moment magnetic NPs in a hard magnetic matrix to produce a nanocomposite with tunable magnetic properties.

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