Method and system for providing a read transducer having a dual free layer

摘要

A method provides a magnetic transducer having an air-bearing surface (ABS). The method includes providing a read sensor stack for a read sensor of the read device and defining a read sensor from the read sensor stack in a stripe height direction. The stripe height direction is perpendicular to the ABS. At least one magnetic bias structure is also provided. An insulating layer is deposited on the read sensor. The insulating layer has a full film removal rate of not more than fifty Angstroms per minute. The insulating layer also has a top surface. The insulating layer is planarized. At least a portion of the top surface of the insulating layer being exposed at the start of the planarizing step. At least the read sensor is defined in a track width direction.

主权项

1. A method for providing a magnetic read apparatus having an air-bearing surface (ABS) and comprising:
providing a read sensor stack for a read sensor of the read device; defining a read sensor from the read sensor stack in a stripe height direction, the stripe height direction being perpendicular to the ABS; providing at least one magnetic bias structure; depositing an insulating layer on the read sensor, the insulating layer having a full film removal rate of not more than fifty Angstroms per minute, the insulating layer having a top surface; planarizing the insulating layer, at least a portion of the top surface of the insulating layer being exposed at the start of the planarizing; and defining at least the read sensor in a track width direction.