Magnetic properties of cobalt nanodots hexagonal arrays: effect of the shapes and direction of the magnetic field.

F. MÉLICA; J. ESCRIG; N. BAJALES LUNA; O. E. LINAREZ PÉREZ; D. ARCINIEGAS JAIMES

Temuco

Congreso; 17th International Seminar on Condensed Matter Physics and Statistical Physics, - SIMAFE (virtual); 2022

Magnetic nanodots have been widely studied due to their large number of technological applications [1] such as spintronics and microwave devices. Furthermore, cobalt-based nanomaterials are extensively used since they exhibit high magnetic flux density and high perpendicular magnetic anisotropy.On the other hand, dipolar interaction between neighbouring nanostructures in magnetic arrays directly affects their magnetic properties and reversal processes. Therefore, controlling the nanomagnets shape as well as center-to-center distance (dcc) will determine the use of these materials for a specific application.In this work, static micromagnetic simulations for hexagonal arrays of Co nanodots were performed with the OOMMF software [2]. In order to analyse their magnetic behavior, nanodots geometry (circular and square) and center-to-center distance as well as the direction of the applied magnetic field (x and z-axis) were studied.