Abstract—According to experimental and theoretical investigations, the one-dimensional 180 Néel domain wall is divided into three regions, namely, a central region (core) and two adjacent lateral tail regions located symmetrically relative to the core. An analytical model has been suggested in which the logarithmic depen- dence is used to describe the variations in the magnetization in these tails. When searching the equilibrium state, two variable parameters (the angle of the magnetization rotation in the core and the core width) are used. When numerically calculating the components of the total energy (the exchange, anisotropy, and magnetostatic ener- gies), the equal steps of the division are used in both the core region and the extended tails. It has been shown that, as the film thickness increases from 10 to 50 nm, the core thickness decreases, and the width of the tails increases significantly.