Composite Media for Heat Assisted Magnetic Recording
| Autor: | Yoshiaki Sonobe, Hiroaki Muraoka, Simon Greaves |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Leading edge Materials science Condensed matter physics Composite number Zero (complex analysis) Composite media 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Electronic Optical and Magnetic Materials Magnetization Heat-assisted magnetic recording 0103 physical sciences Trailing edge Electrical and Electronic Engineering 0210 nano-technology Anisotropy |
| Zdroj: | IEEE Transactions on Magnetics. 53:1-4 |
| ISSN: | 1941-0069 0018-9464 |
| DOI: | 10.1109/tmag.2017.2696561 |
| Popis: | Composite media grains consisting of two discrete magnetic layers with different uniaxial anisotropies, $K_{u}$ , and Curie temperatures, $T_{c}$ , were investigated for heat assisted magnetic recording. The maximum switching probability of optimized composite grains exceeded that of single phase grains. As $K_{u}$ of one layer increased the optimum $K_{u}$ of the other layer became smaller, tending toward zero in many cases. Leading and trailing edge recording were also compared. Trailing edge recording was superior when the maximum temperature in the grain, $T_{\text {max}}$ , was similar to $T_{c}$ , but when $T_{\text {max}}$ exceeded $T_{c}$ leading edge recording performed better. |
| Databáze: | OpenAIRE |
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