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Workshop on "Pattern Media" on 21st April 2008 by Dr. Bruce Terris (2008 IEEE Distinguished Lecturer)
PATTERNED NANOMAGNETIC BITS AND DEVICES
Bruce D. Terris
Click here to download workshop registration form
As conventional magnetic recording technology extends
to ever higher areal density, it is possible the often predicted, and constantly increasing, density limit will be reached.
This limit will likely be in the range of 750 – 1000 Gb/in2. The use of nanofabrication to create patterned magnetic elements,
or patterned media, is one of the proposed approaches with the promise of delaying the onset of superparamagnetism and
thus enabling higher areal density. I will discuss many of the challenges that must be overcome for patterned media to be
successful, including fundamental physics and material science issues, new fabrication technologies, nm-scale manufacturing
tolerances, and low cost budgets.
One of these challenges is to controllably reverse one magnetic element, or bit,
without affecting the neighboring elements. A narrow anisotropy distribution will be required, yet data suggest that as the
element size shrinks, the distribution widens. This distribution arises from a number of sources, including shape and size
distributions, edge effects, variations in the full film anisotropy and magnetostatic fields from neighboring elements.
As will be discussed, understanding and controlling the switching properties of magnetic nanostructures is critical not
only for patterned media, but for device applications such as MRAM cells and spintronic devices and, for current induced
as well as field induced reversal.
 Bruce D. Terris received the B.S. degree in applied physics from Columbia University and the M.S. and
Ph. D. degrees in physics from the University of Illinois at Urbana-Champaign. After receiving his doctorate,
he was a post-doctoral fellow for two years at Argonne National Laboratory. In 1985, he joined IBM as a
Research Staff Member at the Almaden Research Center, San Jose, CA, and subsequently joined Hitachi GST
when it was founded in 2003 and where he is currently the manager of Nanostructures group. His research interests
have included thin film superconductivity and magnetism, contact electrification of insulators, and new types of scanning
probe microscopes (STM, AFM, near-field optical, etc.). His current research is on nanoscale patterning of magnetic structures,
thermally assisted magnetic recording, novel approaches to high density data storage and spin torque devices.
He has co-authored over 90 refereed publications and been issued more than 20 US patents. He has recently served as
program co-chair for Intermag 2006 and program chair for the Nanoscale Science and Technology Division of AVS for 2005.
He currently serves on the Administrative Committees of the IEEE Magnetic Society and the MMM conference and will serve
as US program chair for Intermag 2008 and US Conference Chair for Intermag 2011 (Taipei). He is a Fellow of the APS and AVS,
and is a member of IEEE.
Contact: Dr. Bruce D. Terris, Hitachi Global Storage Technologies, San Jose Research Center, 3403 Yerba Buena Road,
San Jose, CA 95135, USA; telephone +1 408 717 5262; Fax:+1 408 717 9065; e-mail: Bruce.Terris@ieee.org
Click here to download workshop registration form
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