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Title: A New Strategy to Synthesize Anisotropic SmCo5 Nanomagnets

Journal Article · · Nanoscale
DOI: https://doi.org/10.1039/C8NR01690A · OSTI ID:1433969
 [1];  [1];  [2];  [1];  [1];  [1];  [1]
  1. Brown Univ., Providence, RI (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)

We report a simple strategy to synthesize anisotropic SmCo5 nanoplates. The strategy involves the pre-synthesis of 125 x 12 nm Sm(OH)3 nanorods and 10 nm Co nanoparticles followed by self-assembly of these nanorods and nanoparticles into Sm(OH)3-Co nanocomposites. Once embedded in CaO matrix, the nanocomposite is subject to high temperature (850 °C) annealing in the presence of Ca, leading to the formation of 125 x 10 nm SmCo5 nanoplates, which are dispersible in ethanol, allowing the alignment in epoxy resin under a 20 kOe magnetic field. The aligned SmCo5 nanoplates show a square hysteresis behavior with room temperature coercivity reaching 30.1 kOe, which is among the highest values ever reported for SmCo5 made from chemical methods. The work provides a new approach to high-performance anisotropic SmCo5 for permanent magnet applications.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
SC0012704; SC-0012704
OSTI ID:
1433969
Alternate ID(s):
OSTI ID: 1435368
Report Number(s):
BNL-203502-2018-JAAM; NANOHL
Journal Information:
Nanoscale, Vol. 10, Issue 18; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 30 works
Citation information provided by
Web of Science

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Cited By (8)

Chemical Synthesis of Magnetically Hard and Strong Rare Earth Metal Based Nanomagnets journal December 2018
A Flame‐Reaction Method for the Large‐Scale Synthesis of High‐Performance Sm x Co y Nanomagnets journal September 2019
Chemical Synthesis of Magnetically Hard and Strong Rare Earth Metal Based Nanomagnets journal December 2018
A Flame-Reaction Method for the Large-Scale Synthesis of High-Performance Sm x Co y Nanomagnets journal September 2019
Chemical Synthesis of Magnetic Nanoparticles for Permanent Magnet Applications journal October 2019
Chemically synthesized anisotropic SmCo 5 nanomagnets with a large energy product journal January 2019
Dispersible SmCo 5 nanoparticles with huge coercivity journal January 2019
Enhancing the coercivity of SmCo 5 magnet through particle size control journal January 2020

Figures / Tables (6)