Patent ID: 7773341

Claim:
A laminated main pole layer structure, comprising: (a) a seed layer formed on a substrate; (b) a plurality of stacks each comprised of an alignment layer (B) for controlling the grain growth and magnetic moment direction in an overlying high moment magnetic layer, and the high moment magnetic layer (M) wherein the plurality of stacks each has a bottom surface and a top surface and is stacked in a direction perpendicular to the substrate and to the planes of the B and M layers; (c) an amorphous material layer (A) comprised of an oxide, nitride, or oxynitride of one or more of Hf, Zr, Ta, Al, Mg, Zn, or Si that is formed between the top surface of each stack and the bottom surface of a neighboring stack; and (d) a cap layer formed on the top surface of an uppermost stack to give a configuration represented by seed/[(B/M)/A] n /(B/M)/cap where n is an integer.