HAMR Thermal Modeling Including Media Hot Spot
- Resource Type
- Periodical
- Authors
- Huang, L.; Stipe, B.; Staffaroni, M.; Juang, J.-Y.; Hirano, T.; Schreck, E.; Huang, F.-Y.
- Source
- IEEE Transactions on Magnetics IEEE Trans. Magn. Magnetics, IEEE Transactions on. 49(6):2565-2568 Jun, 2013
- Subject
- Fields, Waves and Electromagnetics
Media
Magnetic heads
Heat-assisted magnetic recording
Heating
Atmospheric modeling
Heat transfer
Air-bearing surface (ABS)
head-disk interface (HDI)
heat-assisted magnetic recording (HAMR)
media hot-spot
- Language
- ISSN
- 0018-9464
1941-0069
All previous thermal modeling on heat exchange between hard disk drive (HDD) head and media treated media as a heat sink with uniform ambient temperature. However in heat-assisted magnetic recording (HAMR) system, the media temperature is no longer uniform and the temperature at the hot spot center can reach as high as 800 to 1000 K depending on recording layer's Curie temperature. In this paper, both media hot spot and the air bearing flow are included in formulating heat transfer across the head-media interface. Numerical results for a waveguide only slider and a slider with a metallic near-field transducer (NFT) are presented to illustrate the effect of HAMR media temperature.