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Title: A New Strategy to Synthesize Anisotropic SmCo 5 Nanomagnets

We report a simple strategy to synthesize anisotropic SmCo 5 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 SmCo 5 nanoplates, which are dispersible in ethanol, allowing the alignment in epoxy resin under a 20 kOe magnetic field. The aligned SmCo 5 nanoplates show a square hysteresis behavior with room temperature coercivity reaching 30.1 kOe, which is among the highest values ever reported for SmCo 5 made from chemical methods. The work provides a new approach to high-performance anisotropic SmCo 5 for permanent magnet applications.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Brown Univ., Providence, RI (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Report Number(s):
BNL-203502-2018-JAAM
Journal ID: ISSN 2040-3364; NANOHL
Grant/Contract Number:
SC0012704; SC-0012704
Type:
Accepted Manuscript
Journal Name:
Nanoscale
Additional Journal Information:
Journal Name: Nanoscale; Journal ID: ISSN 2040-3364
Publisher:
Royal Society of Chemistry
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING, POLICY AND ECONOMY; SmCo5; Nanomagnets; Nanocomposites
OSTI Identifier:
1433969
Alternate Identifier(s):
OSTI ID: 1435368