论文信息 - Volume average demagnetizing tensor of rectangular prisms

Volume average demagnetizing tensor of rectangular prisms

An exact analytic formula is presented for the magnetostatic field produced by a three-dimensional array of uniformly magnetized rectangular prisms. It is derived from the volume integration of a point-function demagnetizing tensor. The values of the point-function demagnetizing tensor at the centers of rectangular prisms of different aspect-ratios are compared with the volume averaged ones. This difference for the zz-component of demagnetizing tensors reaches 35% at its maximum when the aspect-ratio is 2.

[1] Ronald B. Goldfarb,et al. Demagnetizing factors for cylinders , 1991 .

[2] Yasutaro Uesaka,et al. Direct Solution of the Landau-Lifshitz-Gilbert Equation for Micromagnetics , 1989 .

[3] M. Schabes,et al. Magnetostatic interaction fields for a three-dimensional array of ferromagnetic cubes , 1987 .

[4] E. Torre. Magnetization calculation of fine particles , 1986 .

[5] Y. Nakatani,et al. Computer simulation of magnetization reversal of cubic, thin and elongated particles; effect of method of calculating demagnetizing field , 1995 .

[6] E. Della Torre,et al. Theoretical aspects of demagnetization tensors , 1966 .

[7] E. Schlömann. A Sum Rule Concerning the Inhomogeneous Demagnetizing Field in Nonellipsoidal Samples , 1962 .