Patent ID: 6219206
Filing Date: 2001-04-17
Classification: B82Y,G11B,Y10T

Abstract:
A magneto-resistive effect type head comprising between a lower shield layer and an upper shield layer:an MR sensor including a thin film having at least a magneto-resistive effect or a giant magneto-resistive effect,bias layers for applying a longitudinal bias magnetic field to said MR sensor, andelectrode layers for supplying a detection current to said MR sensor, anda lower insulating layer between said MR sensor and said lower shield layer and an upper insulating layer between said MR sensor and said upper shield layer, said two insulating layers being located at that part of said head which faces a magnetic medium,wherein portions of said lower and upper insulating layers in which said MR sensor and said lower and upper shield layers do not face each other have a lower resistivity than the other portions of said lower and upper insulating layers in which said MR sensor and said lower and upper shield layers face each other.