A theory has been developed to explain the experimental dependence of the magnetoresistance of the FeNiCo nano strip on the external magnetic field. The theory is based on the assumption of a one-dimensional nonuniformity of the distribution of magnetization in a nano strip, which makes it possible to implement an effective algorithm for solving the micromagnetic equilibrium problem. It is shown that the developed theory is in good agreement with the calculations of the specialized OOMMF package, but significantly exceeds it in performance for such problems.
75.78.Cd Micromagnetic simulations
$^1$Department of General Physics, Faculty of Physics, M.V.Lomonosov Moscow State University, chair of General Physics .
$^2$V.A. Trapeznikov Institute of Control Sciences of Russian Academy of Sciences
$^3$Nauchno-proizvodstvennyj kompleks «Tekhnologicheskij centr»