MAGNETORESISTIVE REPRODUCING HEAD AND MAGNETIC RECORDING/REPRODUCING DEVICE

摘要

PURPOSE: To increase the reproducing output of a magnetoresistive reproducing head. CONSTITUTION: A lower shielding film (Nice film) 10 of 2μm thickness, a magnetic gap forming insulating film (Al2 O3 film) 20 of 0.2μm thickness, a magnetoresistive film (NiFe film) 30 of 20nm thickness and a nonmagnetic electrically conductive film (Ta film) 40 of 15nm thickness are successively laminated on a substrate 5 and patterning is carried out so as to decide the height of the magnetoresistive film 30 (the interval between a face on the recording medium side and a face on the opposite side). A soft magnetic film (CoZrTa film) 50 of 20nm thickness is then laminated.