Distributions of stresses in elastic body due to molecular interactions

(Analysis considering one-dimensional periodic material distribution)

Abstract

Recently small devices are developed due to the development of mechanical technology. The head/disk interface (HDI) in hard disk drives is one example of the small device. In recently developed magnetic storage systems, the spacing between the flying head and the disk has been drastically reduced to less than a few nm to facilitate ultra-high density recording. Furthermore, magnetic interference between adjacent data tracks is becoming significant by reducing the spacing between the flying head and the disk. For that reason recording media with grooves such as discrete track media (DTM) and bit-patterned media (BPM) are considered to be some of the most promising media for achieving ultra-high densities. The stresses in elastic body are changed due to the distribution of materials on the disk surface. In this paper, we established an analysis method of stresses in elastic body due to molecular interaction with periodic distribution based on Mindlin solutions.