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dc.contributor.authorEason, Kwakuen
dc.contributor.authorRadhakrishnan, Rathna Kumaren
dc.contributor.authorSari Shafidah Shafieeen
dc.contributor.authorElidrissi, Moulay Rachiden
dc.contributor.authorWang, Hong Taoen
dc.contributor.authorChan, Kheong Sannen
dc.contributor.authorGuan, Yong Liangen
dc.identifier.citationSari Shafidah Shafiee, Elidrissi, M. R., Wang, H. T., Eason, K., Radhakrishnan, R. K., Chan, K. S., & Guan, Y. L. (2012). Application of the grain flipping probability model to heat assisted magnetic recording. Journal of Applied Physics, 111(7), 07B714-.en
dc.description.abstractHeat assisted magnetic recording (HAMR) is often lauded as one of the key technologies poised to replace conventional granular magnetic recording (CGMR). Conventional recording is expected to eventually fail because as the information-bearing grains continue to shrink, they become thermally unstable and will spontaneously flip due to excitations from the ambient temperature. HAMR grains are smaller and have larger anisotropies making them thermally stable, but unwritable at room temperature. Heat from a laser is applied to assist during the writing. The grain flipping probability (GFP) model has been proposed to model and predict the densities achievable in conventional recording systems. In this work we modify the GFP to include a circular hot-spot of a laser as a 2 D Gaussian and predict the expected ensities that might be achieved on HAMR media with 4 nm grains. In this work we examine the effect of varying the hot-spot diameter, the hot-spot peak, and the alignment of the hot-spot to the magnetic footprint profile.en
dc.relation.ispartofseriesJournal of Applied Physicsen
dc.rights© 2012 American Institute of Physics. This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: [].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en
dc.titleApplication of the grain flipping probability model to heat assisted magnetic recordingen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen
dc.description.versionPublished versionen
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