NDLI: Heat Assisted Magnetic Recording on High Anisotropy Nanocomposite Media

Content Provider	IEEE Xplore Digital Library
Author	Peng, Y. Klemmer, T.J. Ju, G. Gage, E. Seigler, M.A. Challener, W.A. Karns, D.C. Zhu, X. Gokemeijer, N. Peng, C. Pelhos, K. Lu, B. Rausch, T. Wu, X.W. Li, L. Hsia, Y.T. Buechel, D. Hempstead, R.D. Rottmayer, R.
Copyright Year	2008
Description	Author affiliation: Seagate Technol., Pittsburg, PA (Peng, Y.; Klemmer, T.J.; Ju, G.; Gage, E.; Seigler, M.A.; Challener, W.A.; Karns, D.C.; Zhu, X.; Gokemeijer, N.; Peng, C.; Pelhos, K.; Lu, B.; Rausch, T.; Wu, X.W.; Li, L.; Hsia, Y.T.; Buechel, D.; Hempstead, R.D.; Rottmayer, R.)
Abstract	The tremendous increase in magnetic areal density has been largely responsible for the proliferation of hard disk drive recording into new applications and markets. The superparamagnetic limit imposes a signal-to-noise ratio, thermal stability, and writability tradeoff that limits the ability to continue to scale traditional magnetic recording technology to higher storage densities. Heat assisted magnetic recording (HAMR) offers a new degree of freedom with elevated writing temperature that holds the promise of extending the areal density of magnetic data storage. By temporarily heating the media during the recording process, the media coercivity can be lowered below the available applied magnetic write field, allowing higher media anisotropy and therefore smaller thermally stable grains. The heated region is then rapidly cooled in the presence of the applied head field where transition is recorded. With a tightly focused laser beam heating the media, the write process is similar to magneto- optical recording, but in a HAMR system the readout is performed with a magneto-resistive element.
Starting Page	603
Ending Page	604
File Size	195273
Page Count	2
File Format	PDF
ISBN	9781424421039
DOI	10.1109/NANO.2008.180
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-08-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Media Heating Magnetic recording Anisotropic magnetoresistance Magnetic heads Head Magnetic anisotropy
Content Type	Text
Resource Type	Article

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