| 摘要 |
In a magneto-resistive head, the magnetic orientation of magnetic domain control layers is stabilized to pin the bias magnetic field that acts on the free layer of a magneto-resistive film, thereby suppressing the production of noise such as Barkhausen noise and enabling the magneto-resistive head to operate stably. A CPP-type magneto-resistive head includes a magneto-resistive element, a lower electrode layer and an upper electrode layer disposed so as to sandwich the magneto-resistive element in a thickness direction, magnetic domain control layers that are disposed via insulating films on both sides of the magneto-resistive element and apply a bias magnetic field that controls a magnetic domain of the free layer provided in the magneto-resistive element, and antiferromagnetic layers that are laminated on the magnetic domain control layers and pin a bias magnetic field of the magnetic domain control layers.
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