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US 2006/0039092 A1Published application
CPP GMR/TMR structure providing higher dR
AssigneeHitachi Global Storage Technologies
InventorHardayal Gill
Life of this patent
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Abstract
A current perpendicular to plane (CPP) sensor having FeN in their free and pinned layers. A tunnel junction sensor (TMR) according to the present invention can have a MgO barrier layer, and a CPP GMR sensor according to the present invention can have a Cr spacer layer.
Claims22
A tunnel valve magnetoresistive sensor, comprising:
- a magnetic pinned layer comprising FeN;
- a magnetic free layer;
- and
- a non-magnetic, barrier layer sandwiched between the free layer and the pinned layer, the barrier layer comprising MgO.
1 more element
A tunnel valve magnetosresistive sensor, comprising:
- a magnetic pinned layer;
- a magnetic free layer comprising NiFe;
- and
- a non-magnetic, barrier layer sandwiched between the free layer and the pined layer, the barrier layer comprising MgO.
1 more element
A tunnel valve magnetoresistive sensor, comprising:
- a magnetic free layer comprising FeN;
- a magnetic pinned layer comprising FeN;
- and
- a non-magnetic barrier layer comprising MgO sandwiched between the free layer and the pinned layer.
1 more element
A current perpendicular to plane (CPP) giant magnetoresistive sensor, comprising:
- a magnetic free layer comprising FeN, and having 1-5 atomic percent N;
- a magnetic pinned layer comprising FeN, and having 1-5 atomic percent N;
- and
- a non-magnetic, electrically conductive spacer layer.
1 more element
A data recording system, comprising:
- a magnetic medium;
- a slider;
- an actuator connected with the slider for positioning the slider over a surface of the magnetic medium;
- and
- A tunnel valve magnetoresistive sensor connected with the slider and further comrpising:
- a magnetic free layer comprising FeN;
- a magnetic pinned layer comprising FeN;
- and
- a non-magnetic barrier layer comprising MgO sandwiched between the free layer and the pinned layer.
6 more elements
Dependencies are inferred from the claim text.