| Literature DB >> 28771363 |
Bo Shen1, Adriana Mendoza-Garcia1, Sarah E Baker2, Scott K McCall2, Chao Yu1, Liheng Wu1, Shouheng Sun1.
Abstract
We report a new strategy for stabilizing Fe nanoparticles (NPs) in the preparation of SmCo5-Fe nanocomposites. We coat the presynthesized Fe NPs with SiO2 and assemble the Fe/SiO2 NPs with Sm-Co-OH to form a mixture. After reductive annealing at 850 °C in the presence of Ca, we obtain SmCo5-Fe/SiO2 composites. Following aqueous NaOH washing and compaction, we produced exchange-coupled SmCo5-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.Entities:
Keywords: Magnetic material; compaction; nanocomposite; nanoparticle stability; rare-earth hard magnet
Year: 2017 PMID： 28771363 DOI： 10.1021/acs.nanolett.7b02593
Source DB: PubMed Journal: Nano Lett ISSN： 1530-6984 Impact factor: 11.189