Silicon nitride gradient film as the underlayer of ultra-thin tetrahedral amorphous carbon overcoat for magnetic recording slider

2011 ◽  
Vol 131 (1-2) ◽  
pp. 127-131 ◽  
Author(s):  
Gui-Gen Wang ◽  
Xu-Ping Kuang ◽  
Hua-Yu Zhang ◽  
Can Zhu ◽  
Jie-Cai Han ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Amorphous Carbon ◽  
Magnetic Recording ◽  
Carbon Overcoat ◽  
Tetrahedral Amorphous Carbon

Deformation of an Ultra-Thin Diamond-Like Carbon Coating on a Magnetic Recording Head Under Combined Loading

2014 ◽  
Author(s):  
Michael Price ◽  
Andrey Ovcharenko ◽  
Raj Thangaraj ◽  
Bart Raeymaekers
Keyword(s):  
Magnetic Recording ◽  
Carbon Coating ◽  
Silicon Layer ◽  
Combined Loading ◽  
Design Parameters ◽  
Diamond Like Carbon ◽  
Carbon Overcoat ◽  
Recording Head ◽  
Tetrahedral Amorphous Carbon ◽  
Magnetic Recording Head

Combined normal and tangential loading of a magnetic recording head on a rigid hydrogenated diamond counterface is simulated using molecular dynamics. Deformation of the substrate, silicon interlayer and tetrahedral amorphous carbon overcoat that comprise the head is quantified as a function of operating and design parameters. We find that decreasing the silicon layer thickness decreases residual strain in the recording head. Deformation occurs primarily at the Ni-Si interface and within the Si layer.

Excellent wear life of silicon nitride/tetrahedral amorphous carbon bilayer overcoat on functional tape heads

2015 ◽  
Vol 106 (9) ◽  
pp. 091604 ◽  
Author(s):  
Reuben J. Yeo ◽  
Neeraj Dwivedi ◽  
S. Tripathy ◽  
C. S. Bhatia
Keyword(s):  
Silicon Nitride ◽  
Amorphous Carbon ◽  
Tetrahedral Amorphous Carbon ◽  
Wear Life

Thermal decomposition and desorption of PFPE Zdol on a DLC substrate using quartic bond interaction potential

RSC Advances ◽  
2015 ◽  
Vol 5 (85) ◽  
pp. 69651-69659 ◽  
Author(s):  
S. K. Deb Nath
Keyword(s):  
Thermal Decomposition ◽  
Interaction Potential ◽  
Magnetic Recording ◽  
Magnetic Layer ◽  
Hard Disk ◽  
Carbon Overcoat ◽  
Heat Assisted Magnetic Recording ◽  
Reading And Writing ◽  
Bond Interaction ◽  
Laser Rays

In heat assisted magnetic recording (HAMR) system, heating of the hard disk magnetic layer is carried out by applying laser rays during the movement of the read/write head over the carbon overcoat for the purpose of reading and writing on its magnetic layer.

FCVA-Synthesized Tetrahedral Amorphous Carbon Films for Biomedical Applications

2007 ◽  
Vol 336-338 ◽  
pp. 1577-1580 ◽  
Author(s):  
Chuan Lin Zheng ◽  
Wu Bao Yang ◽  
X. Chang
Keyword(s):  
Amorphous Carbon ◽  
Biomedical Applications ◽  
Pure Titanium ◽  
Carbon Films ◽  
Vacuum Arc ◽  
Negative Bias Voltage ◽  
Tetrahedral Amorphous Carbon ◽  
In Vitro Measurements ◽  
Filtered Cathodic Vacuum Arc

Tetrahedral amorphous carbon (ta-C) films were deposited onto Si(100) wafers by using filtered cathodic vacuum arc technique (FCVA). The influence of the negative bias voltage applied to substrates on film structures was studied by Raman spectroscopy, X-ray photoemission spectroscopy (XPS). The ta-C films showed maximal sp3 fractions 87%, the hardness and elastic modulus of the ta-C film is 72 and 480 GPa, respectively. In vitro measurements of contact angle and platelet adhesion were applied to evaluate the biocompatibility of the ta-C films in comparison with that of NiTi, 316L and pure titanium. The results show that the ta-C films have hydrophobicity and exhibit better hemocompatibility which are very suitable for biomedical applications.

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