Present and Future of the Magnetic Hard Disk Drive
Jeff Childress - San Jose Research Center HGST
Lundi 08/02/2016, 15h00-16h00
Amphithéâtre Daniel Dautreppe, CEA-Grenoble

We take it for granted that in our information age all of our data needs to be stored somewhere, quickly, safely and reliably.  Whether it is translated into tiny magnetic poles within hard disk drives, or into a few units of electric charge inside a silicon chip, the enormous amount of data storage required in our society relies on amazing scientific and technological progress.  The vast majority of active data is stored on magnetic hard disk drives (HDD’s), and HDD’s are likely the most complex of devices using nanotechnology.  Today’s commercial hard disk drives can store information at > 600 Gbit/in2, with data bits < 60nm x 15nm, read sensor dimensions < 50nm x 30nm, and the recording head “flying” a few nanometers above the nanostructured recording disk. To maintain this technological evolution, every facet of the magnetic recording system must be continuously reduced in dimensions while maintaining adequate signal-to-noise ratio for writing and reading information.  Beyond the challenge and complexity of the basic magnetic recording components, this requires advanced research and development in varied areas such as mechanics, fluid dynamics, and tribology.  I will review current technologies and today’s key challenges in the development of next generation HDD’s approaching 1 Tb/in2.  I will also briefly describe the science and technology of advanced read and write components that utilize spintronics, near-field optics, and self-assembly, and are aimed at further advancing magnetic storage towards 10 Tb/in2.  Finally, the place of HDD’s in the future memory and data storage hierarchy will be discussed.

Contact : Michel BENINI


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