Heat Assisted Magnetization Reversal on Perpendicular Magnetized Nano-Dot

Nur Aji Wibowo, Cari Cari, Budi Purnama

Abstract


Heat assisted magnetization reversal on perpendicular magnetized nano-dots has been studied by solved Landau Lifshift-Gilbert equation for magnetic recording application. The heat assisted magnetization reversal scheme has been proven to be effectively reduces threshold field down to 90 %. Otherwise, this field doesn’t depend on heating time. To understand a read-write information process, cooling time dependence of threshold field has been evaluated. As a result, the threshold field depends on the cooling time and become constant after 300 ps. This result corresponds to data transfer of Hard Disc Drive about 30 Gb/s.

Keywords


magnetic recording; PMA; heat assisted; threshold field; heating time and cooling time

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References


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DOI: http://dx.doi.org/10.12962/j20882033.v22i2.64

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