1. Computer Simulations of the Magnetic Properties of ${\rm Sm}-{\rm Co}/\alpha-{\rm Fe}$ Nanocomposite Magnets With a Core-Shell Structure
- Author
-
R. Horikawa, Hirotoshi Fukunaga, Masaki Nakano, Takeshi Yanai, K. Abe, and T. Fukuzaki
- Subjects
Magnetic anisotropy ,Nanocomposite ,Materials science ,Condensed matter physics ,Magnet ,Analytical chemistry ,Shell (structure) ,Nanoparticle ,Particle size ,Electrical and Electronic Engineering ,Coercivity ,Anisotropy ,Electronic, Optical and Magnetic Materials - Abstract
The magnetic properties of SmCo5/α-Fe nanocomposite magnets with a core-shell structure were computer-simulated for varying particle size L, α-Fe fraction, and temperature. The structure, consisting of a hard SmCo5 core and a soft α-Fe shell demonstrated better magnetic properties than those of the inverse structure. The (BH)max value for anisotropic magnets was approximately 800 kJ/m3 at room temperature for an L value of 6.4 nm and an α - Fe fraction of 87.5%. At 473 K, the achievable (BH)max value was approximately 700 kJ/m3. These values are comparable to and higher than those for Nd2Fe14B/α-Fe nanocomposite magnets at room temperature and 473 K, respectively, indicating a promising potential for high-temperature SmCo5/α-Fe nanocomposite magnets. more...
- Published
- 2013
- Full Text
- View/download PDF