T1 Abstract Institutional Repository | Satya Wacana Christian University: Perancangan Aplikasi Posyandu Report Menggunakan Teknologi FCM (Firebase Cloud Messanging): Studi Kasus Posyandu Jaka Tingkir VIII, Salatiga

The Impacts of Heating Temperature to the Thermal Stability,

Switching Probability and Magnetization Reversal Mode on the

Perpendicular Ferromagnetic Nanodot

Risha P. A. Sutrisna

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_{, Suryasatriya Trihandaru}

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_{, Nur Aji Wibowo}

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# _{Department of Physics, Satya Wacana Christian University, Salatiga, 50711, Indonesia}

E-mail: nurajiwibowo@gmail.com

Abstract

Heat Assisted Magnetic Recording technology that provides heating close to the Curie temperature has been widely studied in the development of the Hard Disk Drive. In this study, the micromagnetic simulation was conducted using Landau-Lifshitz-Gilbert equation to investigate the magnetization reversal process. The samples were modeled as nanodot with the dimension is 50×50×d

nm3 _{and the thicknesses (d) taken are 10 nm and 100 nm. While the selected parameters of the materials are: magnetic saturation}

4800 Gauss, anisotropy constant 3×106 _erg/cm3_{, exchange constant 6.3×10}-7 _{erg/cm, Curie temperature 740 K, Gilbert damping}

0.4, and Gyromagnetic ratio 1.76×10-7 _Oe-1_s-1_{. To investigate the heating effect, Reduced Barrier Writing and Double Pulses}

scheme were employed. As a result found that the effective heating level for magnetization reversal is at temperature before reaching the Curie temperature.