Western Digital (fremont), Inc.

Jian X Shen

Feng Q Liu

Ming Jiang

Ming Sun

Ying Hong

Dehua Han

Jose Antonio Medina

Geoffrey W Anderson

Qunwen Leng

Lu Yuan

MingLang Yan

Christopher Ng

Xiaobo Huang

A method and system for fabricating a magnetic transducer are described. The magnetic transducer includes a pole and a nonmagnetic intermediate layer adjacent to the pole. The pole has a paddle and a pole tip including a plurality of sidewalls. The pole includes a first magnetic pole layer, at least one antiferromagnetic coupling (AFC) structure on the first magnetic pole layer, and a second magnetic pole layer on the AFC structure(s). At least a portion of the first magnetic pole layer resides on the sidewalls of the pole tip. The paddle has a paddle width in a track width direction. The pole tip has a pole tip width in a track width direction that is less than the paddle width.

Method and system for providing an antiferromagnetically coupled writer

A method for fabricating a magnetic tunnel junction (MTJ) is disclosed. The process involves annealing a stack that includes a tunnel barrier layer and cooling the stack under vacuum immediately after annealing. At least one overlayer is deposited on the tunnel barrier layer to form the MTJ.

Magnetic tunnel junction (MTJ) with a magnesium oxide tunnel barrier

A method of fabricating a tunneling magnetoresistance (TMR) reader is disclosed. A TMR structure comprising at least one ferromagnetic layer and at least one nonmagnetic insulating layer is provided. A first thermal annealing process on the TMR structure is performed. A reader pattern definition process performed on the TMR structure to obtain a patterned TMR reader. A second thermal annealing process is performed on the patterned TMR reader.

Method of fabricating a tunneling magnetoresistive (TMR) reader

A method and system for providing a magnetic structure in magnetic transducer is described. The method and system include providing a pinning layer, a synthetic antiferromagnetic (SAF) adjacent to the pinning layer, a nonmagnetic layer, and a sensor layer. The SAF resides between the nonmagnetic and pinning layers. The nonmagnetic layer is between the SAF and the sensor layer. The SAF includes a pinned layer, a reference layer, and a nonmagnetic spacer layer between the pinned and reference layers. The pinned layer is magnetically coupled with the reference layer and includes sublayers. A first sublayer has a first blocking temperature distribution (T) and a first exchange energy. A second sublayer has a second Tand a second exchange energy. The first sublayer is between the pinning layer and second sublayer. The first Tis greater than the second T. The first exchange energy is less than the second exchange energy.

Method and system for providing a magnetic transducer having an improved read sensor synthetic antiferromagnet

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Pleasanton, CA, United States of America

Jian X Shen