The dynamical response to the node defect in thermally activated remagnetization of magnetic dot array

Abstract

The influence of nonmagnetic central node defect on dynamical properties of regular square-shaped 5 × 5 segment of magnetic dot array under the thermal activation is investigated via computer simulations. Using stochastic Landau-Lifshitz-Gilbert equation we simulate hysteresis and relaxation processes. The remarkable quantitative and qualitative differences between magnetic dot arrays with nonmagnetic central node defect and magnetic dot arrays without defects have been found.

Magnetization and Lyapunov exponents on a kagome chain with multi-site exchange interaction

“…[14][15][16][17][18][19][20][21][22][23][24][25][26]). The experimental evidence for the appearance of magnetization plateaus has also been found for two-dimensional systems [27][28][29][30]. On triangular lattices a magnetization plateau was observed at m/m s = 1/3 for compounds like C 6 Eu [31], CsCuCl 3 [32] (see also Refs.…”