The next step in data storage involves ultra-high-density magneto-optical storage devices can could store more than 6,000 Terabits (6 petabits) of data, more than 70 times the contents of the entire U.S. Library of Congress, on a single 5-inch disc. (Note that hard disks for PCs exist which have 2TB. The new generation will be 3,00 times that size.)
The problem is the speed of read/write. In the Journal of Applied Physics, researchers at Sun Yat-Sen University in China have demonstrated a way to record on ferromagnetic films using laser-assisted ultrafast magnetization reversal dynamics.
EureakAlert reports that Tianshu Lai and colleagues appear to have a breakthrough giving ultrafast data transfer at least thirty times faster than that of present hard disks in computers.
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