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Title: Stabilizing Fe Nanoparticles in the SmCo 5 Matrix

Abstract

In this paper, 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. In conclusion, 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.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2];  [2]; ORCiD logo [1];  [1]; ORCiD logo [1]
  1. Brown Univ., Providence, RI (United States). Department of Chemistry
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Materials Science Division
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1409987
Report Number(s):
LLNL-JRNL-737360
Journal ID: ISSN 1530-6984
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 17; Journal Issue: 9; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; compaction; Magnetic material; nanocomposite; nanoparticle stability; rare-earth hard magnet

Citation Formats

Shen, Bo, Mendoza-Garcia, Adriana, Baker, Sarah E., McCall, Scott K., Yu, Chao, Wu, Liheng, and Sun, Shouheng. Stabilizing Fe Nanoparticles in the SmCo5 Matrix. United States: N. p., 2017. Web. doi:10.1021/acs.nanolett.7b02593.
Shen, Bo, Mendoza-Garcia, Adriana, Baker, Sarah E., McCall, Scott K., Yu, Chao, Wu, Liheng, & Sun, Shouheng. Stabilizing Fe Nanoparticles in the SmCo5 Matrix. United States. doi:10.1021/acs.nanolett.7b02593.
Shen, Bo, Mendoza-Garcia, Adriana, Baker, Sarah E., McCall, Scott K., Yu, Chao, Wu, Liheng, and Sun, Shouheng. Thu . "Stabilizing Fe Nanoparticles in the SmCo5 Matrix". United States. doi:10.1021/acs.nanolett.7b02593. https://www.osti.gov/servlets/purl/1409987.
@article{osti_1409987,
title = {Stabilizing Fe Nanoparticles in the SmCo5 Matrix},
author = {Shen, Bo and Mendoza-Garcia, Adriana and Baker, Sarah E. and McCall, Scott K. and Yu, Chao and Wu, Liheng and Sun, Shouheng},
abstractNote = {In this paper, 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. In conclusion, 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.},
doi = {10.1021/acs.nanolett.7b02593},
journal = {Nano Letters},
number = 9,
volume = 17,
place = {United States},
year = {Thu Aug 03 00:00:00 EDT 2017},
month = {Thu Aug 03 00:00:00 EDT 2017}
}

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