Magnetic recording head and magnetic recording apparatus
First Claim
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1. A magnetic writing head comprising:
- a main magnetic pole;
a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field; and
a laminated body including;
a first magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole;
a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole;
a third magnetic layer having an easy magnetization axis that is in-plane of the third magnetic layer; and
an intermediate layer provided between the first magnetic layer and the second magnetic layer,wherein the second magnetic layer is provided between the third magnetic layer and the first magnetic layer.
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Abstract
An example magnetic recording head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, and an intermediate layer provided between the first magnetic layer and the second magnetic layer. The pair of electrodes is operable to pass a current through the laminated body.
155 Citations
15 Claims
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1. A magnetic writing head comprising:
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a main magnetic pole; a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field; and a laminated body including; a first magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole; a second magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole; a third magnetic layer having an easy magnetization axis that is in-plane of the third magnetic layer; and an intermediate layer provided between the first magnetic layer and the second magnetic layer, wherein the second magnetic layer is provided between the third magnetic layer and the first magnetic layer. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A magnetic writing head comprising:
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a main magnetic pole; a coil to generate an ampere magnetic field to magnetize the main magnetic pole to cause the magnetized main magnetic pole to generate a magnetic field; and a laminated body including; a first magnetic layer having a coercitivity lower than the magnetic field applied by the main magnetic pole; a second magnetic layer having a coecivity lower than the magnetic field applied by the main magnetic pole; and a third magnetic layer having a coercivity lower than the magnetic field applied by the main magnetic pole, wherein the first magnetic layer is provided between the second magnetic layer and the third magnetic layer. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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Specification