Patent ID: 6530141
Filing Date: 2003-03-11
Classification: B82Y,G11B,Y10T

Abstract:
A method of forming a thin film magnetic head, comprising the steps of:forming a first magnetic layer; forming a second magnetic layer as a magnetic flux passage in combination with the first magnetic layer; and forming a laminate structure body between the first magnetic layer and the second magnetic layer; wherein the step of forming the laminate structure body includes forming a third magnetic layer, a fourth magnetic layer and a non-magnetic conductive layer between the third magnetic layer and the fourth magnetic layer, projecting the laminate structure body more toward an air bearing surface than a projection of the first magnetic layer and the second magnetic layer toward the air bearing surface, and providing the laminate structure body with a width which is smaller than a width of the first magnetic layer and the second magnetic layer; and wherein the forming of each of the third magnetic layer and the fourth magnetic layer includes utilizing a plated magnetic film having a saturable magnetic flux density of at least 1.5 tesla, and the forming of the second magnetic layer includes utilizing plating or sputtering and providing a width wider than a frame width of the plated magnetic film and a specific resistance of at least 50 &mgr;&OHgr;Â·cm under a condition that the thin film magnetic head performs a predetermined high density recording at a predetermined high driving frequency.