Recording head design for identifying reader-to-permanent magnet isolation failure

摘要

A spin valve head configured to operate in a Current-In-Plane (CIP) mode is provided. The spin valve head has an air bearing surface (ABS) and a top and a bottom shield separated by a central region proximate the ABS. A sensor, positioned in the central region, has a proximal end and a distal end, with the proximal end forming a portion of the ABS. A permanent magnet is positioned in the central region and proximate the distal end of the sensor. The permanent magnet being separated from the sensor by a gap layer. The top shield, the bottom shield and the permanent magnet are electrically coupled together to allow for electrical testing of the spin valve head.