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arXiv · 1510.05582

Far-field head-media optical interaction in heat-assisted magnetic recording

Ruoxi Yang·Paul Jones·Timothy Klemmer·Heidi Olson·Deming Zhang·Tyler Perry·Werner Scholz·Huaqing Yin·Roger Hipwell·Jan-Ulrich Thiele·Huan Tang·Mike Seigler
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Abstract

We have used a plane-wave expansion method to theoretically study the far-field head-media optical interaction in HAMR. For the ASTC media stack specifically, we notice the outstanding sensitivity related to interlayer's optical thickness for media reflection and magnetic layer's light absorption. With 10-nm interlayer thickness change, the recording layer absorption can be changed by more than 25%. The 2-D results are found to correlate well with full 3-D model and magnetic recording tests on flyable disc with different interlayer thickness.

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Ruoxi Yang, Paul Jones, Timothy Klemmer, Heidi Olson, Deming Zhang, Tyler Perry, Werner Scholz, Huaqing Yin, Roger Hipwell, Jan-Ulrich Thiele, Huan Tang, Mike Seigler. 2016-01-25. Far-field head-media optical interaction in heat-assisted magnetic recording. https://doi.org/10.1364/ao.55.001241

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