MAGNETIC TRANSDUCER HAVING A PLURALITY OF MAGNETIC LAYERS STACKED ALTERNATELY WITH A PLURALITY OF NONMAGNETIC LAYERS AND A FIXED-ORIENTATION-OF-MAGNETIZATION LAYER AND THIN FILM MAGNETIC HEAD INCLUDING THE MAGNETIC TRANSDUCER

摘要

An object of the invention is to provide a magnetic transducer and a thin film magnetic head using the same, which can be manufactured by a simple manufacturing process and can obtain good output. The thin film magnetic head has a stack including a plurality of magnetic layers stacked alternately with a plurality of nonmagnetic layers. A layer having the fixed orientation of magnetization is formed on at least one side of the stack in the direction of stacking. The layer has a stacked structure comprising an antiferromagnetic layer and an exchange coupling layer exchange coupling with the antiferromagnetic layer. The magnetic layers of the stack are changed into a single magnetic domain by a magnetic field generated by exchange coupling between the antiferromagnetic layer and the exchange coupling layer so as to prevent Barkhausen noise. Since the layer is formed on at least one side of the stack in the direction of stacking, a manufacturing process is simplified.