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    STUDIA PHYSICA - Issue no. 1 / 2007  
         
  Article:   DEPOSITION AND GROWTH METHODS OF MEDIA FILMS, NANO-ASSEMBLED AND NANO-ORGANIZED OBJECTS, LITHOGRAPHY METHODS.

Authors:  JULIEN BACHMANN. 		 
       
         
  Abstract:  Current magnetic recording platforms (computer hard drives) consist of ferromagnetic thin films. Each binary bit of information is stored by an area consisting of large numbers (≈20-1000) of magnetic grains. Within this framework, size reduction driven by the need to reach ever-increasing data storage densities will at some point reach a limit, set by superparamagnetism. Indeed, below a certain size limit (related to the volume of magnetic domains), the magnetic energy of a single magnetic particle is too small relative to thermal energy for magnetic ordering to occur — the tendency of neighboring spins to align is overcome thermally, and the bit of information is lost. The development of future high-density data storage platforms thus requires the preparation and systematic investigation of magnetic nanoobjects susceptible to overcome the superparamagnetic limit.  
         
     
         
         
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