公开(公告)号：US10777222B1

公开(公告)日：2020-09-15

申请号：US16792010

申请日：2020-02-14

Applicant: Western Digital Technologies, Inc.

Inventor： Xiaoyong Liu ,  Chih-Ching Hu ,  Daniele Mauri ,  Ming Mao ,  Guanxiong Li ,  Yukimasa Okada ,  Ying Hong

IPC: G11B5/39 ,  G11B5/48 ,  G01R33/09

Abstract: A hybrid read head structure for two-dimensional magnetic recording (TDMR) in a disk drive has two stacked current-perpendicular-to-the plane magnetoresistive (CPP-MR) read heads or sensors substantially aligned with one another in the along-the track direction to enable both sensors to read data from the same data track. The structure is a hybrid structure formed on the disk drive slider with the lower sensor being a dual free layer (DFL) or scissoring type of CPP-MR sensor and the upper sensor being a single free layer (SFL) type of CPP-MR sensor.