Barium Ferrite Media for Extremely High Density Recording Applications

  • Yang-Ki Hong (Magnetic and Electronic Materials Research Laboratory, Department of Metallurgical Engineering, University of Idaho) ;
  • Hong-Sik Jung (Magnetic and Electronic Materials Research Laboratory, Department of Metallurgical Engineering, University of Idaho)
  • Published : 1998.09.01


In this paper a structurally coupled and magnetically decoupled Ba-ferrite thin film medium is proposed to evade the superparamagnetic limit and reduce media noise. The proposed medium consists of ferrimagnetic Ba-ferrite nano-grains (< 10 nm) and a non-magnetic grain boundary material. Magnetic grains are crystallographically matched with the grain boundary material. Spherical or cubic shaped Ba-ferrite particle is also proposed for above 100 Kfci particulate recording application.



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