Analysis on the magnetic capping effect in heat assisted magnetic recording

Xianying Wang; Ming Fang; Jingsong Wei; Qinghui Li; Defang Shen; Fuxi Gan

doi:10.1117/12.649609

15 September 2005 Analysis on the magnetic capping effect in heat assisted magnetic recording

Xianying Wang, Ming Fang, Jingsong Wei, Qinghui Li, Defang Shen, Fuxi Gan

Proceedings Volume 5966, Seventh International Symposium on Optical Storage (ISOS 2005); 59660D (2005) https://doi.org/10.1117/12.649609
Event: Seventh International Symposium on Optical Storage (ISOS 2005), 2005, Zhanjiang, China

Abstract

The use of magnetic capping effect can enhance the head sensitivity of the heat assisted magnetic recording (HAMR). The principle of this effect was analyzed theoretically. The GdFeCo film was used as the capping layer and TbFeCo film was used as the recording layer. Through theoretical calculation we found that a large capping field in the same direction with the external field can be generated at the interface because of the exchange coupling effect, which had increased the effective strength of the external field. Thus, the head sensitivity was improved greatly and the data transfer rate could be faster. We expected that this idea can be used to help write the medium with much larger cocervity such as L1₀FePt.

Citation Download Citation

Xianying Wang, Ming Fang, Jingsong Wei, Qinghui Li, Defang Shen, and Fuxi Gan "Analysis on the magnetic capping effect in heat assisted magnetic recording", Proc. SPIE 5966, Seventh International Symposium on Optical Storage (ISOS 2005), 59660D (15 September 2005); https://doi.org/10.1117/12.649609

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