Magneto-electric hard drives that do not require low temperatures

Magneto-electric hard drives that do not require low temperatures https://i1.wp.com/www.eresviral.com/wp-content/uploads/2018/11/Discos-duros-magnetoeléctricos-que-no-requieren-bajas-temperaturas.jpg?fit=110%2C146&ssl=1

Magneto-electric hard drives that do not require low temperatures







Computers often operate continuously, consuming many kilowatt hours of electricity per year. Most are used for data storage. These are written on hard drives as magnetic bits, by states of ones or zeros, a process that requires a continuous inversion of the polarity from more to less and vice versa. This inversion of the magnetic pole consumes a lot of energy, and involves a considerable emission of heat. This is the reason why computers have to be cooled intensively while they are working. This requires a lot of energy, carries high costs and does not help to care for the environment. Scientists have long been looking for a material that eliminates this drawback of conventional magnetic data storage.



For some years, the so-called magnetoelectric multiferroic materials have attracted the interest of researchers as a possible alternative.



The use of these materials promises to make possible more efficient computers from the energy point of view, because an electric field would be sufficient for the magnetic storage of data. To produce this, a much smaller amount of energy and cooling is required than with conventional magnetic storage.



With these materials, the necessary magnetic functionality is achieved through the application of an electric field, instead of a magnetic field, since these two physical properties are paired in the material. The state that allows it usually requires very low temperatures, usually below 173 degrees Celsius below zero, and is impossible at temperatures typical of everyday life.







The matte gray object is a perovskite crystal by layers of copper-iron. (Photo: Paul Scherrer Institute / Markus Fischer)



Two years ago, a working group at the Paul Scherrer Institute (PSI) in Switzerland managed to move the temperature limit to 37 degrees centigrade. This was a big step forward, but it was not yet enough to try to use it on laptops and other data storage systems that get very hot.



Now, the international team of Marisa Medarde and Tian Shang, both from PSI, has managed to stabilize a multiferroic magnetoelectric material that retains the necessary magnetic properties even at 100 degrees centigrade.



In order to maintain stable magnetic properties even at this latter temperature, the researchers had to resort to a material design that included making it more compact.



Additional Information

        .

  !function(f,b,e,v,n,t,s)

  {if(f.fbq)return;n=f.fbq=function(){n.callMethod?

  n.callMethod.apply(n,arguments):n.queue.push(arguments)};

  if(!f._fbq)f._fbq=n;n.push=n;n.loaded=!0;n.version='2.0';

  n.queue=[];t=b.createElement(e);t.async=!0;

  t.src=v;s=b.getElementsByTagName(e)[0];

  s.parentNode.insertBefore(t,s)}(window, document,'script',

  'https://connect.facebook.net/en_US/fbevents.js');

  fbq('init', '369524843414444');

  fbq('track', 'PageView');

    .


SOURCE LINK ERESVIRAL.COM 
https://www.beviral.online