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A revolutionary new way of magnetic recording uses heat to allow data to be processed hundreds of times faster than current hard drive technology

An international team of scientists found they could record information using only heat a previously unimaginable scenario.They believe this discovery will not only make future magnetic recording devices faster,but more energy-efficient too.

The results of the research,which was led by the University of Yorks Department of Physics,are reported in the journal Nature Communications.

Instead of using a magnetic field to record information on a magnetic medium,we harnessed much stronger internal forces and recorded information using only heat.This revolutionary method allows the recording of Terabytes (thousands of GB) of data per second,hundreds of times faster than present hard drive technology.As there is no need for a magnetic field,there is also less energy consumption, said York physicist Thomas Ostler.

The multinational team of scientists included researchers from Spain,Switzerland,Ukraine,Russia,Japan and the  Netherlands.Experimental work was carried out at the Paul Scherrer Institut in Switzerland,the Ioffe Physical Technical Institute of the Russian Academy of Sciences and Radboud University Nijmegen,Netherlands.

For centuries it has been believed that heat can only destroy the magnetic order.Now we have successfully demonstrated that it can,in fact,be a sufficient stimulus for recording information on a magnetic medium, said Alexey Kimel,from the Institute of Molecules and Materials,Radboud University Nijmegen.
Modern magnetic recording technology employs the principle that the North pole of a magnet is attracted to the South pole of another and two like poles repulse.
Until now it has been believed that in order to record one bit of information by inverting the poles of a magnet there was a need to apply an external magnetic field.The stronger the applied field,the faster the recording of a magnetic bit of data.
However,the team of scientists has demonstrated that the positions of both the North and South poles of a magnet can be inverted by an ultra short heat pulse,harnessing the power of much stronger internal forces of magnetic media.
The tech uses heat to write instead of magnetic fields,its faster and uses less energy 
The ultimate hard drive,consisting of many individual nanometre sized magnetic grains.The data is written to the device using an ultrafast heating process to drive the reversal at a data rate of 200Gb/s thats 300 times the performance of current HDDs

Posted February 13, 2012 by avinash2060 in Innovation

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