A New Strategy to Synthesize Anisotropic SmCo5 Nanomagnets
- Brown Univ., Providence, RI (United States)
- 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
Web of Science
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