Chemically synthesizing PrCo5 single-crystal particles to fabricate high-performance anisotropic nanomagnets

Abstract In this paper, we report an approach to chemically synthesize PrCo5 nanomagnet with high performance. The synthesis starts with the fabrication of composite containing Pr(OH)3 nanorods and Co(OH)2 nanoflakes by the hydrothermal process, which can be further reduced by Ca to yield 380 nm PrCo5 single-crystal particles. These particles can be suspended in epoxy and aligned into nanomagnet, leading to a large coercivity of 13.1 kOe, high remanence of 0.8, and magnetic energy product of 14 MGOe, which is among the highest values for PrCo5 magnets.