scholarly journals Reduction of grain size and intergrain interaction in FePt∕Pt∕Cr trilayer thin films for perpendicular magnetic recording

2006 ◽  
Vol 99 (8) ◽  
pp. 08E709 ◽  
Author(s):  
An-Cheng Sun ◽  
Jen-Hwa Hsu ◽  
H. L. Huang ◽  
P. C. Kuo
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Magnetic Recording ◽  
Perpendicular Magnetic Recording

Coupled Granular/Continuous Media – Results and Challenges

MRS Advances ◽  
2017 ◽  
Vol 2 (49) ◽  
pp. 2661-2668
Author(s):  
Horia Gavrila ◽  
Doina Elena Gavrila
Keyword(s):  
Thermal Stability ◽  
Grain Size ◽  
Magnetic Recording ◽  
Granular Media ◽  
Signal To Noise Ratio ◽  
Signal To Noise ◽  
Theoretical Limit ◽  
Perpendicular Recording ◽  
Perpendicular Magnetic Recording ◽  
Longitudinal Recording

ABSTRACTWhile the most promising longitudinal recording systems cannot surpass the theoretical limit of about 200 Gb/in2 for areal recording density and the demand for higher densities is permanently increasing, the perpendicular magnetic recording constitutes the realistic issue to the longitudinal one. The perpendicular magnetic recording offers significant advantages, the most important being stronger write and read fields, and therefore the use of media of higher anisotropy, smaller grain size, higher signal-to-noise ratio, and a better thermal stability. Unfortunately, the perpendicular recording has to cope some important physical and technological difficulties. To overcome them, many ingenious solutions were proposed. In this paper the coupled granular/continuous (CGC) media, a subtle association of the continuous and, respectively, granular media, are analysed from the viewpoint of their magnetic and recording properties. The challenges and possible improvements of CGC media are discussed.

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.

Growth Structure of Thin Films for Perpendicular Magnetic Recording Media

2000 ◽  
Vol 35 (6-7) ◽  
pp. 707-711 ◽  
Author(s):  
G. Radnóczi ◽  
P.B. Barna ◽  
M. Adamik ◽  
Zs. Czigány ◽  
J. Ariake ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Perpendicular Magnetic Recording ◽  
Growth Structure

Vacuum evaporated Co-O thin films for perpendicular magnetic recording media

1989 ◽  
Vol 25 (5) ◽  
pp. 4186-4188 ◽  
Author(s):  
Y. Tateno ◽  
K. Iwasaki ◽  
H. Naruse ◽  
R. Chubachi
Keyword(s):  
Thin Films ◽  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Perpendicular Magnetic Recording

SmCo/sub 5/-based thin films with high magnetic anisotropy for perpendicular magnetic recording

2005 ◽  
Vol 41 (10) ◽  
pp. 3133-3135 ◽  
Author(s):  
J. Sayama ◽  
K. Mizutani ◽  
Y. Yamashita ◽  
T. Asahi ◽  
T. Osaka
Keyword(s):  
Thin Films ◽  
Magnetic Anisotropy ◽  
Magnetic Recording ◽  
Perpendicular Magnetic Recording
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