Tuesday, October 25th, 2011
Fourth Tuesday, not the usual third Tuesday
Western Digital, 1710 Automation Parkway, San Jose, CA
Directions and Map
Cookies, Conversation &
Pizza too at 7:00 P.M.
Presentation at 7:30 P.M.
Tentative Evolution of perpendicular magnetic recording media and upcoming challenges
Gerardo Bertero, Ph.D,
Western Digital Corp.
Abstract
Since the 2005 commercial introduction of perpendicular magnetic recording in hard disk drives, the recording areal density has increased by a factor of 5 and it is likely to reach a factor of 10 on current technology extension before new paradigms need to be invoked. From the media perspective, significant structural evolution took place to enable such areal density growth. Surprisingly, however, most of this growth has occurred with little change in the media grain size. This loss of scaling in such an important media feature cannot continue much further and imparts great pressure for developing new materials and processes to address obvious shortcomings. Similar to the grain size example, scaling of all other media features require much needed innovation. In this talk, we will discuss some of the most relevant evolutionary changes in PMR media, the short-term challenges required for extending current technology and new challenges associated with future technology candidates such as energy assisted recording and bit patterned media.
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