MAGNETIC READING HEAD, ITS MANUFACTURING METHOD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC DISK DRIVE

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of a spin valve sensor that can obtain a desirable ferroimagnetic coupled magnetic field (HF) by a current sputtering method. SOLUTION: A spin valve sensor is formed into pinned layers by sputtering cobalt iron (CoFe) in a nitrogen (N2 ) atmosphere. By this method, sputtering becomes possible over a wide range on a copper spacer layer for realizing a desirable ferromagnetic coupled magnetic field (HF) between the pinned layers and free layers in a spin valve sensor.