Temperature-Induced Changes in the Optical and Material Characteristics of HAMR Media COC and Its Effect on Recording Performance

The carbon overcoat (COC) on heat-assisted magnetic recording (HAMR) media was deposited at increasing temperature. The optical extinction (k) of this media was measured with ellipsometry and found to increase with temperature from 0.2 to 0.9 over the temperature range from 220 °C to 360 °C. Raman s...

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Veröffentlicht in:	IEEE transactions on magnetics 2018-02, Vol.54 (2), p.1-4
Hauptverfasser:	Jones, Paul M., Fan, Zhaohui Z., Xiaoding Ma, Hongbo Wang, Tang, Huan H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Carbon overcoat (COC) Ellipsometry Extinction Finite element method Heat-assisted magnetic recording heat-assisted magnetic recording (HAMR) Magnetic recording Magnetism Media optical Optical films Optical imaging Raman spectroscopy Temperature measurement thermal Thermal conductivity Writing
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