Estimate of effective properties of metal particle tape based on micromechanics
金属颗粒磁带宏观性质的细观力学估计

The magnetic interaction of the particles has significant effects on the effective properties of highdensity recording tape. The interaction direct derivation (IDD) estimate based on the single particle's Stoner-Wohlforth model is generalized in this paper. The generalized IDD (GIDD) estimate, based on micromagnetic theory, is found very close to the results of related experiments and numerical simulations. We show that the IDD (GIDD) estimate has a simple and explicit structure, with clear physical meanings for all involved components, valid for multiphase composites of nonlinear materials, and the influence of various inclusion distribution can be taken into account.