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Technology Stocks : Disk Drive Sector Discussion Forum

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To: Pierre-X who wrote (1994)	1/3/1998 9:40:00 PM
From: Gottfried	Read Replies (2) of 9256

PX, here's what a reliable source told me about the limits of areal density...(paraphrased) The theoretical limit is in the 40-100 Gb/in2 range. This is based on needing about 1000 particles per transition for adequate SNR. The 10 Gb/in2 demo was done with a total magnetic spacing of about 100 Angstroms. Some people are working on methods to get around this.[the 1000 particle limit]. One method is to use patterned media with one particle per bit. So it looks like we'll be OK for a few years. The above subject is over my head, so I am not able to discuss it. GM

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