The Dependence of the Corrosion Behavior of Rigid Disk Magnetic Recording Media on the Deposition Conditions of the Underlayer, Magnetic Layer, and Carbon Overcoat

1992 ◽  
Vol 139 (5) ◽  
pp. 1352-1358 ◽  
Author(s):  
Paul J. Sides
Keyword(s):  
Corrosion Behavior ◽  
Magnetic Recording ◽  
Magnetic Layer ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Carbon Overcoat ◽  
Rigid Disk ◽  
Deposition Conditions

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.

Improvement of crystallographic characteristics of CoCrTa thin film using double underlayer

2001 ◽  
Vol 674 ◽  
Author(s):  
Y.J. Kim ◽  
S.H. Kong ◽  
S. Nakagawa ◽  
M. Naoe ◽  
K.H. Kim
Keyword(s):  
Thin Film ◽  
Magnetic Recording ◽  
Magnetic Layer ◽  
Recording Media ◽  
Interlayer Thickness ◽  
Magnetic Recording Media ◽  
Axis Orientation ◽  
Perpendicular Magnetic Recording ◽  
High Density Recording ◽  
Crystallographic Characteristics

ABSTRACTHigh c-axis oriented CoCr-based thin films are expected for ultra-high density recording media in perpendicular magnetic recording system. In order to improve dispersion angle of c-axis of CoCr-based for perpendicular magnetic recording media, we prepared trilayered film with double underlayer using New Facing Targets Sputtering apparatus. The thickness of magnetic layer CoCrTa and double underlayer, such as interlayer Pt, paramagnetic CoCr, underlayer Ti was fixed 50nm and 20nm respectively. In order to prepare the thin film, we fixed argon gas pressure 1mTorr, substrate temperature 250°C and input current 0.5A. The crystallographic characteristics of CoCrTa layer with varying interlayer thickness (0- 20nm) have been investigated. By the result, the CoCrTa trilayered thin film with interlayer Pt showed good c-axis orientation 3.45° and 3.62° at thickness 5nm and 10nm respectively. However, CoCrTa thin film using interlayer paramagnetic CoCr showed 8.28° and 8.62° at thickness 5nm and 10nm respectively.

Investigation of Magnetic Recording Media with Magnetic Layer Divided by Cr Interlayer

1994 ◽  
Vol 9 (2) ◽  
pp. 63-69
Author(s):  
Y. Kashiwakura ◽  
S. Matsuo ◽  
Y. Sakai ◽  
J. Ohshima ◽  
A. Ueda
Keyword(s):  
Magnetic Recording ◽  
Magnetic Layer ◽  
Recording Media ◽  
Magnetic Recording Media

scholarly journals THE STUDY OF CORROSION BEHAVIOR OF C/CoNiCr/Cr THIN FILM MAGNETIC RECORDING MEDIA

1989 ◽  
Vol 13 (S_1_PMRC_89) ◽  
pp. S1_451-455
Author(s):  
C. S. Yang ◽  
Z. Mei ◽  
D. Xu ◽  
B. P. Shi ◽  
B. C. Cai
Keyword(s):  
Thin Film ◽  
Corrosion Behavior ◽  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media
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