Patent ID: 8023231
Filing Date: 2011-09-20
Classification: G11B

Abstract:
1. A composite shield structure in a magnetic recording device having a main pole layer with a write pole terminating at a pole tip at an air bearing surface (ABS) wherein said write pole has a top surface that is the top edge of the pole tip which has a track width in a cross-track direction, a bottom surface that is the bottom edge of the pole tip which is also the leading edge as the pole tip moves over a recording media, and two sides that connect the top and bottom surfaces, comprising: (a) a trailing shield having a bottom surface formed a certain distance above said top surface of the write pole and top edge of the pole tip, and two sides at the ABS that are parallel to the down track direction; (b) a leading shield having a top surface formed a certain distance below said bottom surface of the write pole and bottom edge of the pole tip, and two sides at the ABS that are parallel to the down-track direction; (c) a partial side shield having a section formed on each side of the write pole wherein each section has a top surface having a width in a cross-track direction, a bottom surface parallel to the top surface, a side parallel to the down-track direction, and a side that is essentially parallel to the nearest side of the write pole and spaced a second distance from said nearest side; and (d) a plurality of magnetic connections between two or more of the aforementioned shield elements.