The Impacts of Heating Temperature to the Thermal Stability,
Switching Probability and Magnetization Reversal Mode on the
Perpendicular Ferromagnetic Nanodot
Risha P. A. Sutrisna
#, Suryasatriya Trihandaru
#, Nur Aji Wibowo
## Department of Physics, Satya Wacana Christian University, Salatiga, 50711, Indonesia
E-mail: [email protected]
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-1s-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.
