公开(公告)号：US20180254061A1

公开(公告)日：2018-09-06

申请号：US15448514

申请日：2017-03-02

Applicant: Seagate Technology LLC

Inventor： Bin LU ,  Jan-Ulrich THIELE ,  Ganping JU ,  Xiaoding MA ,  YingGuo PENG ,  YinFeng DING

IPC: G11B5/66 ,  G11B5/65

CPC classification number: G11B5/66 ,  B32B15/04 ,  G11B5/65 ,  G11B2005/0021

Abstract: Provided herein is an apparatus including a layer stack. A first granular metal layer overlies the layer stack, wherein the first granular metal layer includes first metal grains separated by voids. A first granular non-metal layer overlies the first granular metal layer, wherein the first granular non-metal layer includes first non-metal grains separated by a first segregant. A second granular non-metal layer overlies the first granular non-metal layer, wherein the second granular non-metal layer includes second non-metal grains separated by a second segregant. A second granular metal layer overlies the second granular non-metal layer, wherein the second granular metal layer includes second metal grains separated by a third segregant.