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CNS Colloquium, February 8, 2008


Microwave Assisted Magnetic Recording
Andrjzej Stankiewicz
Research and Technology Development, Seagate Technology, Bloomington, MN

Date: February 8, 2008, Time: 3:30 pm, Location: W122-D3 Engineering Building 1, The University of Houston


In response to the increasingly large volume of digital content kept throughout the world, the storage industry is in a permanent querry for new technologies. In particular, a number of milestones have been reached in hard drive development in recent years. Key examples are giant magnetoresistance and tunnel readers, or perpendicular media. However, it seems that we are approaching the limit defined by the unavoidable compromise between media writeability, the quality of written bits (i.e. magnetic transitions), and the thermal stability of recorded patterns. It is necessary to write on media that are much harder magnetically than traditional materials to move beyond our current limitations. Standard writers are unable to perform this task on continuous media without some form of assist.

This talk will present a closer look at physical background of these limitations and identify different forms of write assist methods. One such example of a possible solutions that will be discussed is Microwave Assisted Magnetic Recording (MAMR). Modeling data and available experimental results will be presented to show the expected advantages and difficulties with this new technology. Additionally, combinations of new technologies such as MAMR and patterned media will be essential for the future of magnetic recording.




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