“…1,2 Shingled magnetic recording (SMR) is being extensively researched by the disk drive industry, and by many researchers around the globe, as it is an extension of the current perpendicular recording with the least limitations and investments. [3][4][5][6][7] The performance of SMR is determined by the overlapping track pitch (TP) which also determines the AD. 7 Earlier, a few research works focused on the feasibility of SMR, 3,8,9 and now the disk drive industry has started building drives with this novel technology, as it is one of the potential candidates to extend conventional recording beyond 1 Tb/in 2 .…”