Effect of Magnetic Recording Layer Thickness on Media Performance in CoCrPt-Oxide Perpendicular Media

2006 ◽  
Vol 42 (10) ◽  
pp. 2330-2332 ◽  
Author(s):  
U. Kwon ◽  
H.S. Jung ◽  
M. Kuo ◽  
E.M.T. Velu ◽  
S.S. Malhotra ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Magnetic Recording ◽  
Recording Layer ◽  
Perpendicular Media ◽  
Media Performance

The Influences of Ru Seed Layer Microstructure on Structural Properties of CoCrPt-SiO2 Perpendicular Media

2015 ◽  
Vol 1101 ◽  
pp. 108-114
Author(s):  
Jun Min Zhang ◽  
Yue Sheng ◽  
Chuan Ju Wang ◽  
Zhi Long Tan ◽  
Jun Bi ◽  
...  
Keyword(s):  
Grain Size ◽  
Magnetic Recording ◽  
Seed Layer ◽  
Magnetic Recording Media ◽  
Perpendicular Recording ◽  
Recording Layer ◽  
Perpendicular Media ◽  
High Density Magnetic Recording ◽  
Segregated Structure

CoCrPt-SiO2granular film is well known as a perpendicular magnetic recording (PMR) media. To control the segregated structure of the recording layer, the role of the Ru underlayer is important. CoCrPt-SiO2perpendicular recording films were prepared by magnetron sputtering, with a series of Ru films as seed layer. The microstructure of Ru seed layers and their influences on the grain size, roughness and surface morphology of CoCrPt-SiO2granular films were investigated. It was found that the microstructure of seed layer obviously effected the structure and grain isolation of recording layers. The grain size and roughness of CoCrPt-SiO2recording layer were both increased with increasing the thickness of Ru seed layer. It is concluded that the thin and rough Ru seed layer is suitable for high-density magnetic recording media, and Ru seed layer with suitable thickness is very helpful for the achievement of perfect isolation and excellent magnetic properties. The result revealed that it was relatively easy for the CoCrPt grains to get perfect isolation with Ru thickness of 70 nm.

A Thermo-Mechanical Finite Element Analysis of Light Sliding Contact at the Head-Disk Interface

2012 ◽  
Author(s):  
Yuliang Liu ◽  
Jia Lou ◽  
David B. Bogy ◽  
Guangyu Zhang
Keyword(s):  
Finite Element ◽  
Layer Thickness ◽  
Magnetic Recording ◽  
Sliding Contact ◽  
Maximum Temperature ◽  
Head Disk Interface ◽  
Recording Layer ◽  
Scratch Depth ◽  
Disk Interface ◽  
Contact Parameters

A three dimensional finite element model of a rigid sphere lightly sliding over an elastic-perfectly plastic multilayered medium under thermo-mechanical surface loading is developed in order to investigate the mechanical and thermal responses during the light sliding contact of a spherical corner or thermal protrusion of a slider with a rotating disk. In this simulation, the effects of the magnetic recording layer thickness t and sliding contact parameters such as normal load F and friction coefficient μ on maximum temperature Tmax of head-disk interface (HDI) and maximum scratch depth h on the multilayered disk media are analyzed for both glass and aluminum disks. The results show that the magnetic recording layer thickness t has a negligible effect on the maximum temperature Tmax of the HDI and scratch depth h on the disk for both types of substrates, but the sliding contact parameters strongly affect the temperature variation and mechanical deformation of the HDI. In addition, the effect of the disk material is also very pronounced.

Soft layer driven switching of microwave-assisted magnetic recording on segmented perpendicular media

2012 ◽  
Vol 111 (6) ◽  
pp. 066102 ◽  
Author(s):  
Jing Qiang Goh ◽  
Zhi-Min Yuan ◽  
Lei Shen ◽  
Tiejun Zhou ◽  
Yuan Ping Feng
Keyword(s):  
Magnetic Recording ◽  
Soft Layer ◽  
Perpendicular Media ◽  
Microwave Assisted

scholarly journals On the Development of Photosensitive Materials with Magnetic Recording Layer

1961 ◽  
Vol 29 (1) ◽  
pp. E61-E65
Author(s):  
Mamoru NAMIKAWA ◽  
Minoru SATO ◽  
Yasuo IMAOKA
Keyword(s):  
Magnetic Recording ◽  
Recording Layer
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