Structure Formation of Magnetic Particles under Magnetic Fields toward Anisotropic Materials

We performed numerical simulation of structure formation of magnetic particles under magnetic field toward anisotropic material development. In this study, we examined the unsteady process of the structure formation and its feature using magnetic particles with diameter of micrometers. This study ev...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2018-10, Vol.424 (1), p.12076
Main Authors: Ando, T., Katayama, D., Hirota, N., Koike, O., Tatsumi, R., Yamato, M.
Format: Article
Language:English
Subjects:
Anisotropic Material
Chain-like cluster
Chains
Clusters
Diameters
Discrete element method
Magnetic fields
Magnetic moments
Magnetic particles
Micrometers
Particle size
Simulation
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Summary:We performed numerical simulation of structure formation of magnetic particles under magnetic field toward anisotropic material development. In this study, we examined the unsteady process of the structure formation and its feature using magnetic particles with diameter of micrometers. This study evaluated the process of structure forming with various particle diameters and particle volume concentrations using the Non-dimensional Boundary Area (NBA). The structure formed by the magnetic particles does not depend on the particle diameter but depends on the particle volume concentration. In the case of particle volume concentration ϕ = 5 vol%, the bundle of chain-like cluster is not made and each chain-like cluster by magnetic particles is almost single chain. However, in the case of more than ϕ = 10 vol%, the bundle structure formed by contacts of multiple chain-like clusters is proceeding. On the process of structure formation by magnetic particles, firstly, the single particle rotates by itself with orienting the magnetic moment to the direction of the applied magnetic field. After then, particles connect with each other and the chain-like cluster is formed.
ISSN:1757-8981
1757-899X
1757-899X
DOI:10.1088/1757-899X/424/1/012076