发明授权
US08953285B2 Side shielded magnetoresistive (MR) read head with perpendicular magnetic free layer 有权
具有垂直磁性层的侧面屏蔽磁阻(MR)读头

Side shielded magnetoresistive (MR) read head with perpendicular magnetic free layer
摘要:
A MR sensor is disclosed that has a free layer (FL) with perpendicular magnetic anisotropy (PMA) which eliminates the need for an adjacent hard bias structure to stabilize free layer magnetization and minimizes shield-FL interactions. In a TMR embodiment, a seed layer, free layer, junction layer, reference layer, and pinning layer are sequentially formed on a bottom shield. After patterning, a conformal insulation layer is formed along the sensor sidewall. Thereafter, a top shield is formed on the insulation layer and includes side shields that are separated from the FL by a narrow read gap. The sensor is scalable to widths
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