High coercivity FeSmN thin films for longitudinal magnetic recording media

1994 ◽  
Vol 30 (6) ◽  
pp. 4032-4034 ◽  
Author(s):  
D. Wang ◽  
W.D. Doyle
Keyword(s):  
Thin Films ◽  
Magnetic Recording ◽  
High Coercivity ◽  
Recording Media ◽  
Magnetic Recording Media

Co3Pt Nanocomposite Films for Perpendicular Magnetic Recording Media

2010 ◽  
Vol 123-125 ◽  
pp. 27-30 ◽  
Author(s):  
Chih Long Shen ◽  
Po Cheng Kuo ◽  
S.C. Chen ◽  
C.D. Chen ◽  
S.L. Hsu ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Process Parameters ◽  
Magnetic Recording ◽  
Magnetic Layer ◽  
Nanocomposite Films ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Perpendicular Magnetic Recording ◽  
Significant Potential

The Co3Pt magnetic layer with thickness of 7~28 nm was deposited onto the Pt underlayer. The as-deposited Co3Pt/Pt double-layered films with or without a 5 nm Pt capped layer were annealed at temperatures between 275 and 375 °C in vacuum of 1 mTorr. The influences of process parameters on perpendicular magnetic properties of Co3Pt thin films were investigated. The Co3Pt film with perpendicular coercivity (Hc⊥) value of 3620 Oe and the perpendicular squareness (S⊥) of 0.7 could be achieved from the Co3Pt(18 nm)/Pt(100 nm) double-layered films by annealing at 300°C. Further added Tb30Co70 film on the Co3Pt/Pt double-layered film could greatly enhance the perpendicular magnetic properties of the film. The Hc⊥ and S⊥ of the Tb30Co70/Co3Pt/Pt film were as high as 6560 Oe and 0.88, respectively, which has significant potential to be applied in perpendicular magnetic recording media.

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