Vortex Mode of Magnetization Reversal in Nano Dot Magnetic Permalloy

Dini Wulansari; F Rohmah; Utari Utari; B Purnama

doi:10.53533/JMA.v2i2.22

Authors

Dini Wulansari Universitas Sebelas Maret
F Rohmah Universitas Sebelas Maret
Utari Utari Universitas Sebelas Maret
B Purnama Universitas Sebelas Maret

DOI:

https://doi.org/10.53533/JMA.v2i2.22

Keywords:

Vortex, Magnetization reversal, Nano dot , Permalloy, Micromagnetic simulation

Abstract

Micromagnetic simulations are used to evaluate a minimum of external field needed to switch assisted by vortex. Nano dot magnetic studied has a size 100 x 50 x 60 nm was assumed to be a nano-sized magnetic permalloy. The initial conditions in the form of vortex are simulated by providing a nano second pulse duration of magnetic field. Then the initial condition used to evaluate a minimum switching field require for magnetization process. The results of the simulation show that the reduced magnetic switching up to 46.8 percent compared with conventional magnetization.

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