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From: Jan Panteltje <alien@comet.invalid>
Newsgroups: sci.electronics.design
Subject: Proof of principle demonstration of 3-D magnetic recording
Date: Tue, 09 Apr 2024 04:42:52 GMT
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Proof-of-principle demonstration of 3-D magnetic recording
Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic recording
 https://www.sciencedaily.com/releases/2024/04/240408130543.htm

Picture of layers:
 https://www.nims.go.jp/eng/news/press/2024/03/202403270.html