SUBMICRONWIDTH MULTITRACK SINGLE POLE HEAD FOR ULTRA-HIGH DENSITY PERPENDICULAR MAGNETIC RECORDING

Submicronwidth multitrack single pole heads are presented. The novel h ead consists of three layers of thin film conductors sandwiching two m ain poles. The fields due to the current source in the parallel thin f ilm conductor structure has been analyzed mathematically. This configu ration can yield a strong and steep field gradient. The write performa nce df this head was measured with double-layered media. The recorded trackwidth was confirmed to be about 0.5 mu m with magnetic force micr oscopy. There is no noticeable interference between the two tracks spa ced nearly 1 mu m apart. A track density of 50 kTPI has been achieved.