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Article overview
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Statistical-mechanical theory of the overall magnetic properties of mesocrystals | J. P. Huang
; | Date: |
25 Jul 2004 | Journal: | Phys. Rev. E 70, 041403 (2004) | Subject: | Computational Physics; Statistical Mechanics | physics.comp-ph cond-mat.stat-mech | Abstract: | The mesocrystal showing both electrorheological and magnetorheological effects is called electro-magnetorheological (EMR) solids. Prediction of the overall magnetic properties of the EMR solids is a challenging task due to the coexistence of the uniaxially anisotropic behavior and structural transition as well as long-range interaction between the suspended particles. To consider the uniaxial anisotropy effect, we present an anisotropic Kirkwood-Fröhlich equation for calculating the effective permeabilities by adopting an explicit characteristic spheroid rather than a characteristic sphere used in the derivation of the usual Kirkwood-Fröhlich equation. Further, by applying an Ewald-Kornfeld formulation we are able to investigate the effective permeability by including the structural transition and long-range interaction explicitly. Our theory can reduce to the usual Kirkwood-Fröhlich equation and Onsager equation naturally. To this end, the numerical simulation shows the validity of monitoring the structure of EMR solids by detecting their effective permeabilities. | Source: | arXiv, physics/0407131 | Other source: | [GID 60030] pmid15600404 | Services: | Forum | Review | PDF | Favorites |
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