Micromagnetic study of equilibrium states in nano hemispheroidal shells
Source abstract
Abstract
We present results of micromagnetic simulations of thin ferromagnetic nano hemispheroidal shells with sizes ranging from 1 to 50 nm (inside dimensions). Depending on the geometrical and magnetic parameters of the hemispheroidal shell, there exist four different magnetic phases: easy axis, easy plane, onion and vortex. The profile for the vortex magnetization distribution is analyzed and the limitations and applicability of different vortex ansatzes are discussed. In addition, we investigate the total energy density for each of the magnetic distributions as a function of the hemispheroidal shell dimensions.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Characterization and Applications of Magnetic Nanoparticles · Advanced Materials and Mechanics · Micro and Nano Robotics
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References (19)
Show source-provided references
1. Dual surface-functionalized janus nanocomposites of polystyrene/Fe3O4@SiO2 for simultaneous tumor cell targeting and stimulus-induced drug release10.1002/adma.201301376 ↗
2. Design and synthesis of Janus micro- and nanoparticles10.1039/b505099e ↗
3. Janus particles10.1039/b718131k ↗
4. Synthesis of multifunctional micrometer-sized particles with magnetic, amphiphilic, and anisotropic properties10.1002/adma.201003604 ↗
5. Magnetic vortices on closely packed spherically curved surfaces10.1103/PhysRevB.85.174429 ↗
6. Equilibrium states of soft magnetic10.1142/S2010324713400031 ↗
7. Out-of-surface vortices in spherical shells
8. Equilibrium magnetic states in individual hemispherical permalloy caps
9. Magnetization reversal in a novel gradient nanomaterial10.1103/PhysRevLett.96.077202 ↗
10. Catalytic Janus motors on microfluidic chip: deterministic motion for targeted cargo delivery10.1021/nn300413p ↗
11. Magnetism in curved geometries10.1088/0022-3727/49/36/363001 ↗
12. A systematic approach to multiphysics extensions of finite-element-based micromagnetic simulations: Nmag10.1109/TMAG.2007.893843 ↗
13. M. Donahue, D. porter, OOMMF User’s Guide, Version 1.0, Interagency Report NISTIR 6376, National Institute of Standards and Technology, Gaithersburg, MD, 1999.10.6028/NIST.IR.6376 ↗
14. The design and verification of MuMax310.1063/1.4899186 ↗
15. Hybrid method for computing demagnetizing fields10.1109/20.106342 ↗
16. Compression of boundary element matrix in micromagnetic simulations10.1063/1.3072032 ↗
17. Magnetization curling in a fine cylindrical particle10.1016/0304-8853(93)90428-5 ↗
18. Vortex state stability in soft magnetic cylindrical nanodots10.1063/1.1793327 ↗
19. Equilibrium magnetisation structures in ferromagnetic nanorings10.1016/j.jmmm.2006.07.035 ↗