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

摘要

The influence of nonmagnetic central node defect on dynamical properties ofregular square-shaped 5 x 5 segment of magnetic dot array under the thermalactivation is investigated via computer simulations. Using stochasticLandau-Lifshitz-Gilbert equation we simulate hysteresis and relaxationprocesses. The remarkable quantitative and qualitative differences betweenmagnetic dot arrays with nonmagnetic central node defect and magnetic dotarrays without defects have been found.