(2) (AntiFerromagnetic-Coupled) A hard disk technology from IBM that uses a ruthenium layer three atoms thick sandwiched between two magnetic layers. The magnetic layers allow for thinner bits, and the bit above and below are polarized in opposite directions. This technology pushes the superparamagnetic limit once again. The ruthenium layer, which is a precious metal, has been coined "pixie dust" for its magical properties by IBM engineers. See superparamagnetic limit.
AFC Layers
In antiferromagnetic-coupled storage technology, the bits are created in pairs with opposite polarities above and below the ruthenium layer.
![]() | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
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- Case studies 2007-02-01
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- Blog posts 2006-10-28
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- This paper presents a tutorial on Iterative Learning Control ILC and Repetitive Control RC techniques in Hard Disk Drive HDD industry for compensation of Repeatable RunOuts RRO. After each tutorial, an application example is given. For ILC, a simple filtering-free implementation for written-in RRO compensation is presented. For the RC...
- White papers 2006-09-17
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- These tools will help you to be able to talk to your friends and family back in the states, without local governments listening. In countries like North Korea, China, Iran, or Saudi Arabia the government monitors Internet communications. This program will help you be more prepared to be able to...
- Software downloads 2006-09-05
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- According to David Jackson from Seeking Alpha, Google has invited a few publishers to take part in a CPA (Cost-Per-Action) advertising program experiment -- an addition to the CPM (Cost-Per-Thousand) and CPC (Cost-Per-Click) models that currently exist. The invitation advertisers received contained an attachment with the following information: How...
- Blog posts 2006-06-21
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- Software downloads 2005-06-03
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- The objective of this paper is to provide assistance to those involved with the installation of Oracle Application Server 10g (9.0.4) (AS10g) "Cold Failover Cluster" CFC solution on IBM AIX 5L (5200) operating system. Two high availability cluster solutions are currently offered by Oracle for AS10g - Cold Failover Cluster...
- White papers 2004-10-01
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