Headway Technologies, Incorporated

Western Digital Technologies, Inc.

Western Digital (fremont), Inc.

Sandisk Technologies Inc.

Lijie Guan

Suping Song

Terence T Lam

Changqing Shi

Yaguang Wei

Zhigang Bai

Moris Musa Dovek

Yoshitaka Sasaki

Venkatesh Chembrolu

Joe Smyth

Supradeep Narayana

Zhanjie Li

Yuhui Tang

Jian-Gang Zhu

Tai Min

Michael Kuok San Ho

Anna Zheng

Min Li

Hung Liang Hu

Yaw Shing Tang

Kenichi Takano

Hiroyuki Ito

Cherng-Chyi Han

Youfeng Zheng

Kochan Ju

Po-Kang Wang

Ming Jiang

Shigeki Tanemura

Yuchen Zhou

Hironori Araki

Kuok San Ho

Hiroyuki Itoh

Muhammad Asif Bashir

Yun-Fei Li

Xinjiang Shen

Petrus Antonius Van Der Heijden

Yugang Wang

Ying Hong

Alexander M Taratorin

Fenglin Liu

Michael Ho

Jeiwei Chang

Dong-Hong Li

Yaw-Shing Tang

Ben Hu

Dong Hong Li

Kunliang Zhang

Yingjian Chen

Ellis T Cha

Feng Q Liu

Kroum Stanimirov Stoev

Yue Liu

Tao Pan

Kazuo Ishizaki

Jinqiu Zhang

Matthew R Gibbons

Jiun-Ting Lee

Dujiang Wan

Takehiro Horinaka

Guanghong Luo

Danning Yang

Yunfei Li

Joseph Francis Smyth

Yi Wang

Weimin Si

Adam F Torabi

Terence Tin Lok Lam

Yonghua Chen

Jian Xiang Shen

Michael Kouk San Ho

Yiu Liu

Morris Dovek

Embodiments of the present disclosure generally relate to a magnetic media drive employing a magnetic recording device. The magnetic recording device comprises a trailing gap disposed adjacent to a first surface of a main pole, a first side gap disposed adjacent to a second surface of the main pole, a second side gap disposed adjacent to a third surface of the main pole, and a leading gap disposed adjacent to a fourth surface of the main pole. A side shield surrounds the main pole and comprises a heavy metal first layer and a magnetic second layer. The first layer surrounds the first, second, and third surfaces of the main pole, or the second, third, and fourth surfaces of the main pole. The second layer surrounds the second and third surfaces of the main pole, and may further surround the fourth surface of the main pole.

Magnetic recording devices using virtual side shields for improved areal density capability

The present disclosure generally relates to magnetic recording devices with stable magnetization. The magnetic recording device comprises a lower leading shield, an upper leading shield disposed on the lower leading shield, a main pole disposed above the upper leading shield, a trailing shield disposed above the main pole and upper leading shield, and an upper return pole disposed above the trailing shield. A first non-magnetic layer is disposed between the lower leading shield and the upper leading shield, and a second non-magnetic layer is disposed between the trailing shield and the upper return pole. The lower leading shield has a different domain state than the upper leading shield, and the trailing shield and the upper leading shield have a same domain state. The materials and thickness of the first and second non-magnetic layers result in magnetostatic coupling or anti-ferromagnetic coupling.

Anti-parallel coupled writer shields with stable magnetic domain configuration

A magnetic head includes a main pole configured to serve as a first electrode, an upper pole containing a trailing magnetic shield configured to a serve as a second electrode, and an electrically conductive portion located in a trailing gap between the main pole and the trailing magnetic shield. The electrically conductive portion is not part of a spin torque oscillator stack, and the electrically conductive portion includes at least one electrically conductive, non-magnetic material layer. The main pole and the trailing magnetic shield are electrically shorted by the electrically conductive portion across the trailing gap between the main pole and the trailing magnetic shield such that an electrically conductive path is present between the main pole and the trailing magnetic shield through the electrically conductive portion.

Magnetic head with assisted magnetic recording comprising an electrically conductive, non-magnetic material

A magnetic head includes a main pole configured to serve as a first electrode, an upper pole containing a trailing magnetic shield configured to a serve as a second electrode, and an electrically conductive portion located in a trailing gap between the main pole and the trailing magnetic shield. The electrically conductive portion is not part of a spin torque oscillator stack, and the electrically conductive portion includes first and second electrically conductive, non-magnetic material layers. The spin torque oscillator stack is coupled to the first electrically conductive, non-magnetic material layer. The main pole and the trailing magnetic shield are electrically shorted by the electrically conductive portion across the trailing gap between the main pole and the trailing magnetic shield such that an electrically conductive path is present between the main pole and the trailing magnetic shield through the electrically conductive portion.

Magnetic head with assisted magnetic recording

The present disclosure generally relates to a magnetic media drive employing a magnetic recording head. The magnetic recording head comprises a main pole, an EAMR stack disposed on the main pole, and a trailing shield disposed on the EAMR stack. The EAMR stack comprises a seed layer disposed on the main pole, a spin torque layer disposed on the seed layer, and a spacer layer disposed on the spin torque layer. At least one surface of the spacer layer in contact with the spin torque layer has a smaller or reduced area than the spin torque layer. The at least one surface of the spacer layer in contact with the spin torque layer is recessed from a media facing surface and has a smaller cross-track width than the spin torque layer and a smaller width in the stripe height direction than the spin torque layer.

Energy assisted magnetic recording head having improved areal density capability

Embodiments of the present disclosure generally relate to magnetic recording systems, and more particularly to a magnetic recording system with a current-assisted write head. The write head comprises a main pole, a trailing shield disposed above the main pole, a trailing gap disposed between the main pole and the trailing shield, a side shield surrounding three sides of the main pole, the side shield being in contact with and disposed below the trailing shield and the trailing gap, and a side gap disposed between the side shield and each of the three sides of the main pole. The side gap comprises a non-magnetic electrically-conducting material to dissipate heat away from the main pole, lowering the resistance and temperature rise due to heating. The trailing gap may further comprise a non-magnetic electrically-conducting material. The write head may have a two terminal or three terminal connection configuration.

Write heads having conducting side gap for directing current

Embodiments of the present disclosure generally relate to a magnetic recording device comprising a magnetic recording head having a negative anisotropic magnetic (&#x2212;Ku) material notch. The magnetic recording device comprises a main pole disposed at a media facing surface (MFS), a trailing shield disposed adjacent to the main pole, and a trailing gap disposed between the main pole and the trailing shield. The trailing shield comprises a hot seed layer disposed adjacent to the trailing gap, and a notch comprising a &#x2212;Ku material in contact with the hot seed layer and the trailing gap. The notch is disposed adjacent to a first surface of the main pole at the MFS. The notch comprising the &#x2212;Ku material results in an increased effective write magnetic field, an increased down-track field gradient due to reduced shunting from the main pole to the trailing shield, leading to an increased areal density capacity.

Area density capacity improvement with negative anisotropic magnetic material trailing shield notch

A magnetic recording head includes a trailing shield and a main pole. A trailing shield gap is between the trailing shield and the main pole. A spin orbital torque structure is within the trailing shield gap. The spin orbital torque structure includes a spin torque layer having a first side and a second side at a media facing surface. A first spin Hall layer is along the first side of the spin torque layer. A second spin Hall layer is along the second side of the spin torque layer. The first spin Hall layer comprises a heavy metal material having a positive spin Hall angle. The second spin Hall layer comprises a heavy metal material having a negative spin Hall angle.

Spin orbital torque based microwave assisted magnetic recording with dual spin hall layers or wrap around spin hall layer

The present disclosure is generally related to a magnetic media drive employing a magnetic recording head. The magnetic recording head comprises a main pole extending to a media facing surface (MFS). The main pole has a gradually increasing cross-section area with a low aspect ratio from the MFS to a surface recessed from and parallel to the MFS. The main pole comprises a first leading edge taper angle (LETA), a second LETA less than the first LETA, a first trailing edge taper angle (TETA), and a second TETA less than the first TETA. The main pole further comprises a first flare recessed a first distance from the MFS, the first flare having a first angle, and a second flare recessed a second distance from the MFS greater than the first distance, the second flare having a second angle greater than the first angle.

Magnetic recording head soft error rate improvement with compact main pole

A magnetic head includes a main pole configured to serve as a first electrode, an upper pole containing a trailing magnetic shield configured to a serve as a second electrode, and a record element located in a trailing gap between the main pole and the trailing magnetic shield. The record element includes an electrically conductive, non-magnetic material portion which is not part of a spin torque oscillator stack. The main pole and the trailing magnetic shield are electrically shorted by the record element across the trailing gap between the main pole and the trailing magnetic shield such that an electrically conductive path is present between the main pole and the trailing magnetic shield through the record element.

Magnetic head with assisted magnetic recording and method of making thereof

A magnetic recording head includes a trailing shield, a main pole, and a spin Hall layer. The spin Hall layer is disposed between the trailing shield and the main pole. A first spin torque layer is disposed between the spin Hall layer and the trailing shield. A second spin torque layer is disposed between the spin Hall layer and the main pole.

Spin orbital torque via spin hall effect based energy assisted magnetic recording

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San Jose, CA, United States of America

Lijie Guan