Patent ID: 6381094
Filing Date: 2002-04-30
Classification: B82Y,G11B

Abstract:
A magnetic read head comprising:a read sensor; nonmagnetic nonconductive first and second read gap layers; the read sensor being located between the first and second read gap layers; first and second shield structures; the first and second read gap layers being located between the first and second shield structures; at least one of the shield structures including a heat sink layer and a ferromagnetic layer wherein the ferromagnetic layer is located between the heat sink layer and the read sensor; the heat sink layer including: at least first, second and third films with the second film being located between the first and third films; and the first and third films being selected from the group comprising tantalum (Ta), titanium (Ti) and chromium (Cr) and the second film being selected from the group gold (Au), silver (Ag) and copper (Cu); and the ferromagnetic layer including: at least an iron nitride (FeN) based film and a nickel iron (NiFe) based film with the nickel iron (NiFe) based film being located between the iron nitride (FeN) based film and the read sensor.