Patent ID: 8881376
Filing Date: 2014-11-11
Classification: G11B,Y10T

Abstract:
1. A method of fabricating a perpendicular magnetic recording (PMR) head comprised of forming a main pole layer on a substrate wherein said main pole layer includes a yoke, flare portion, and write pole portion with a write pole tip at an air bearing surface (ABS), said main pole layer is comprised of a laminated structure having a plurality of “n” ferromagnetic layers and “n−1” AFM-FM phase change material spacers wherein the AFM-FM phase change spacers are interchanged between antiferromagnetic (AFM) and ferromagnetic (FM) phases by application of thermal heating and cooling, and said AFM-FM phase change spacers are in an AFM phase when the PMR head is in a non-writing mode and is in a FM phase during a data writing operation.