One-Dimensional Calculation for Magnetic Domain Wall and VBL

The lumped constant model of vertical Bloch lines proposed previously assumes zero VBL thickness, and thus neglects the repulsive force acting between VBL´s originating from exchange energy. In this report, a method of calculation which was developed to analyze magnetization twisting in multilayer magnetic films is applied in a one-dimensional analysis of domain walls and VBL, and an empirical formula is obtained relating the in-plane magnetic field Hs tangent to the wall and the VBL separation SB B.