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Heated Hard Drives Could Be Super-Quick

Postby sunnyd » Tue Feb 07, 2012 8:58 pm

Story : http://www.newscientist.com/blogs/onepercent/2012/02/heated-hard-drives-record-h

Physicists have discovered a new way to record data that could make future hard drives hundreds of times faster than existing technology - all you need is a little heat.

Hard drives store data using magnetic recording, with tiny sections of the disc magnetised in a particular direction to represent the 0 or 1 of a bit. Recording data involves flipping the direction, which is currently done using an external magnetic field. Now, a team of researchers led by Thomas Ostler at the University of York, UK have discovered that a short burst of heat can do the job much faster.

It was previously thought that heat could only assist in remagnetisation when used in conjunction with a magnetic field. It turns out that zapping a magnet with a laser for less than one trillionth of a second, momentarily raising the temperature by over 800 degrees Celsius, can have the same effect. The results were published today in the journal Nature Communications.



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