公开(公告)号：JPH0628633A

公开(公告)日：1994-02-04

申请号：JP32763391

申请日：1991-12-11

Applicant: IBM

Inventor： ROBAATO EDOWAADO FUONTANA JIYU ,  RUBOMIIRU TARASU ROMANKIU ,  MEISON RAMAA UIRIAMUZU ZA SAAD

IPC: G11B5/31 ,  G11B5/39

Abstract: PURPOSE: To obtain an integrated thin film magnetic recording head which is provided with essentially independent read and write circuits and which can be designed highly efficiently. CONSTITUTION: The magnetic recording head is provided with an integrated, inductive writing, magnetoresistive(MR) reading thin film magnetic head provided with an open magnetic yoke 16 having outer legs and a center leg. The outer leg, with one ends superposed on each other, constitutes oppositely facing pole pieces having a conversion gap 28 between the pole pieces, while the center leg, with one end situated between the hole pieces, connects with the outer legs with the other end and constitutes the symmetric magnetic yoke 16. The center leg is provided with a hole opening, with an MR element 30 connected while crossing the hole opening. Each outer leg is equipped with a coil 18, 20; its direction is such that a magnetic flux generated by equal activation becomes equal and passes into opposite direction, while a net magnetic flux is not produced in the center leg. In the reading operation, magnetization rotates in the MR element through the reaction with a magnetic field read out by the conversion gap. In the writing operation, no magnetic flux flows in the center leg because of the symmetry of the magnetic yoke, thereby minimizing disturbance of the reading head due to write-in.