Method and system for providing a magnetic transducer having a high moment bilayer magnetic seed layer for a trailing shield
First Claim
1. A magnetic recording transducer having an air-bearing surface (ABS) and comprising:
- a write pole configured to write to a media;
a nonmagnetic gap;
a magnetic seed layer including a high moment layer and a magnetic buffer layer, the high moment layer being between the nonmagnetic gap and the magnetic buffer layer, the nonmagnetic gap being between the magnetic seed layer and the write pole, the high moment layer having a saturation magnetization greater than 2.3 T and a first corrosion potential, the magnetic buffer layer having a second corrosion potential less than the first corrosion potential;
a trailing shield, the magnetic seed layer being between the trailing shield and the nonmagnetic gap layer, the magnetic buffer layer being between the trailing shield and the high moment layer; and
at least one coil for energizing the write pole.
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Abstract
A method and system for providing a magnetic read transducer is described. The magnetic recording transducer includes a write pole, a nonmagnetic gap, a magnetic seed layer, a trailing shield and coil(s) that energize the write pole. The write pole is configured to write to a media. The nonmagnetic gap is between the write pole and the magnetic seed layer. The magnetic seed layer includes a high moment layer and a magnetic buffer layer. The high moment layer is between the nonmagnetic gap and the magnetic buffer layer. The high moment layer has a saturation magnetization greater than 2.3 T and a first corrosion potential. The magnetic buffer layer has a second corrosion potential less than the first corrosion potential. The magnetic seed layer is between the trailing shield and the nonmagnetic gap layer. The magnetic buffer layer is between the trailing shield and the high moment layer.
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Citations
27 Claims
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1. A magnetic recording transducer having an air-bearing surface (ABS) and comprising:
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a write pole configured to write to a media; a nonmagnetic gap; a magnetic seed layer including a high moment layer and a magnetic buffer layer, the high moment layer being between the nonmagnetic gap and the magnetic buffer layer, the nonmagnetic gap being between the magnetic seed layer and the write pole, the high moment layer having a saturation magnetization greater than 2.3 T and a first corrosion potential, the magnetic buffer layer having a second corrosion potential less than the first corrosion potential; a trailing shield, the magnetic seed layer being between the trailing shield and the nonmagnetic gap layer, the magnetic buffer layer being between the trailing shield and the high moment layer; and at least one coil for energizing the write pole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A magnetic recording disk drive comprising:
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a media; a slider; a magnetic transducer coupled with the slider and having an air-bearing surface (ABS) configured to reside in proximity to the media during operation, the magnetic transducer including a write pole, a nonmagnetic gap, a magnetic seed layer, a trailing shield, and at least one coil, the write pole configured to write to the media, the magnetic seed layer including a high moment layer and a magnetic buffer layer, the high moment layer being between the nonmagnetic gap and the magnetic buffer layer, the nonmagnetic gap being between the magnetic seed layer and the write pole, the high moment layer having a saturation magnetization greater than 2.3 T and a first corrosion potential, the magnetic buffer layer having a second corrosion potential less than the first corrosion potential, the magnetic seed layer being between the trailing shield and the nonmagnetic gap layer, the magnetic buffer layer being between the trailing shield and the high moment layer, the at least one coil for energizing the write pole.
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15. A method for fabricating magnetic recording transducer having an air-bearing surface (ABS), the method comprising:
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providing a write pole configured to write to a media; providing a nonmagnetic gap; providing a magnetic seed layer including a high moment layer and a magnetic buffer layer, the high moment layer being between the nonmagnetic gap and the magnetic buffer layer, the nonmagnetic gap being between the magnetic seed layer and the write pole, the high moment layer having a saturation magnetization greater than 2.3 T and a first corrosion potential, the magnetic buffer layer having a second corrosion potential less than the first corrosion potential; providing a trailing shield, the magnetic seed layer being between the trailing shield and the nonmagnetic gap layer, the magnetic buffer layer being between the trailing shield and the high moment layer; and providing at least one coil for energizing the write pole. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification