Journal
NANOSCALE
Volume 10, Issue 18, Pages 8735-8740Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr01690a
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Funding
- Critical Materials Institute, an Energy Innovation Hub - U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office
- DOE, Office of Basic Energy Sciences [DE-SC-0012704]
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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 the self-assembly of these nanorods and nanoparticles into Sm(OH)(3)-Co nanocomposites. Once embedded in a CaO matrix, the nanocomposite is subjected to high temperature (850 degrees 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. This work provides a new approach to high-performance anisotropic SmCo5 for permanent magnetic applications.
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