Western Digital (Fremont), Inc.

Chengtao R Yu

Ying Hong

Feng Q Liu

Yunfei Ding

Dehua Han

Zhigang Bai

Zhanjie Li

Tao Pan

Yunfei Li

Laurence Lujun Chen

Yu Lo

Bo Zhang

A method and system for providing a touchdown sensor for use in disk drive is described. The touchdown sensor includes a seed layer, a sensor layer on the seed layer, and a capping layer. The sensor layer includes NiFe. In some embodiments, at least one of the seed layer and the capping layer promote stability and performance of the sensor layer.

Touchdown sensor having a more stable crystal structure for use in hard disk drives

A method and system provide a touchdown sensor for use in disk drive. The touchdown sensor includes a sensor layer including a plurality of magnetic layers interleaved with at least one nonmagnetic layer. The plurality of magnetic layers are magnetically coupled and single domain. Further, the sensor has a temperature coefficient of resistivity (TCR) of at least 0.15%/&#xb0; C.

Laminated touchdown sensor for hard disk drives

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.

Method and system for providing a magnetic transducer having a high moment bilayer magnetic seed layer for a trailing shield

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Mountain House, CA, United States of America

Chengtao R Yu