By a News Reporter-Staff News Editor at Journal of Technology -- Current study results on Magnetics have been published. According to news originating from Jhongli, Taiwan, by VerticalNews correspondents, research stated, "This paper presents the effect of nanoscale damage layer on magnetic results obtained from the optimization of media overcoat deposition parameters on the top magnetic layer on magnetic hard disks. We have investigated the effects of interface interaction between the overcoat deposition parameters on the top magnetic layer on the media by using a plasma enhanced chemical vapor deposition (PECVD) on next generation hard disks."
Our news journalists obtained a quote from the research from the Department of Mechanical Engineering, "The goal is to achieve a reduced damage layer, lower head media spacing (HMS) and a higher spectrum of signal to noise ratio (SpSNR) optimized by using Taguchi experimental design with a four-factor three-level (L9) orthogonal array. An analysis of variance (ANOVA) was carried out to interpret the measured coercivity (He), HMS and SpSNR. It was found that source gas type is the most significant factor with a percentage contribution effect of 59.8% on HMS and 51.7% on SpSNR. The bias voltage is the second most significant factor with its percentage contribution being 24.2% on HMS and 31.0% on SpSNR."
According to the news editors, the research concluded: "Overall, the optimum SpSNR was obtained using a C2H2 source gas, 100 V bias voltage, 50 V anode voltage and 20 seem gas flow rate, respectively."
For more information on this research see: Damage layer study of the overcoat deposited on the top magnetic layer of hard disks. Journal of Magnetism and Magnetic Materials, 2014;351():76-81. Journal of Magnetism and Magnetic Materials can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Magnetism and Magnetic Materials - www.elsevier.com/wps/product/cws_home/505704)
The news correspondents report that additional information may be obtained from R.H. Yeh, Chien Hsin Univ, Dept. of Mech Engn, Jhongli 32097, Taiwan. Additional authors for this research include T.M. Chao and A.H. Tan.
Keywords for this news article include: Asia, Taiwan, Jhongli, Magnetics
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