Headway Technologies, Incorporated

Sae Magnetics (h.k.) Limited

Tdk Corporation

Sae Magentics (h.k.) Ltd.

Milipitas

Sae Magntics (h.k.) Ltd.

Magnetics (h.k.) Ltd.

Hiroyuki Ito

Yoshitaka Sasaki

Shigeki Tanemura

Hironori Araki

Kazuki Sato

Atsushi Iijima

Yukinori Ikegawa

Seiichiro Tomita

Tatsuya Shimizu

Hiroshi Ikejima

Ryuji Fujii

Hideo Mamiya

Kazuo Ishizaki

Tatsuya Harada

Nobuyuki Okuzawa

Satoru Sueki

Kazumasa Yasuda

Takehiro Horinaka

Yoji Nomura

Xuhui Jin

Takehiro Kamigama

Lijie Guan

Atsushi Yamaguchi

Tetsuya Roppongi

Kenichi Takano

Tatsushi Shimizu

Kei Hirata

Masakazu Okada

Min Li

Tetsuhito Shinohara

Dayu Zhou

Dong Hong Li

Koji Shimazawa

Cherng-Chyi Han

Yuhui Tang

Ying Liu

Wenyu Chen

Ryuji Hashimoto

Weihao Xu

Jianing Zhou

Michitaka Nishiyama

Alain Truong

Atsushi Iljima

A waveguide includes a core and a cladding. The core has an inlet on which light is incident. The core includes a front portion and a rear portion located between the front portion and the inlet. The front portion and the rear portion each have a thickness that is a dimension in a first direction and a width that is a dimension in a second direction. The first direction is orthogonal to a propagation direction of the light. The second direction is orthogonal to the propagation direction of the light and the first direction. The thickness of the front portion decreases with increasing distance from the inlet.

Waveguide and manufacturing method thereof

A thermally-assisted magnetic recording head includes a medium facing surface, a main pole, a waveguide, and a plasmon generator. A second metal layer of the plasmon generator includes a second front end facing the medium facing surface. A third metal layer of the plasmon generator includes a narrow portion located on the second metal layer. The narrow portion includes a front end face located in the medium facing surface and configured to generate near-field light from a surface plasmon, and a rear end opposite the front end face. The rear end is located farther from the medium facing surface than is the second front end.

Thermally-assisted magnetic recording head having plasmon generator of multiple metal layers

A magnetic head includes a medium facing surface, a main pole, a trailing shield, and a spin torque oscillator. A bottom surface of the trailing shield includes a first portion that includes an end located in the medium facing surface and is in contact with the spin torque oscillator at least in part. An element height that is a dimension of the spin torque oscillator in a direction perpendicular to the medium facing surface and a writer height that is a dimension of the first portion in the direction perpendicular to the medium facing surface are different from each other.

Magnetic head including spin torque oscillator

A magnetic head includes a medium facing surface, a main pole, a trailing shield, a spin torque oscillator, and a first insulating layer. The first insulating layer is interposed between a portion of the main pole and a portion of the spin torque oscillator. The first insulating layer has a first end closest to the medium facing surface. The spin torque oscillator has a rear end farthest from the medium facing surface. The first end of the first insulating layer is located closer to the medium facing surface than the rear end of the spin torque oscillator is.

A thermally-assisted magnetic recording head includes a medium facing surface, a main pole, a waveguide, and a plasmon generator. The plasmon generator includes a first metal layer and a second metal layer. The first metal layer includes a plasmon exciting portion on which surface plasmons are excited. The second metal layer is located on the first metal layer, and includes a bottom surface in contact with the first metal layer, a top surface located on a side opposite to the bottom surface, a front end face that is located in the medium facing surface and generates near-field light from the surface plasmons, and a connecting surface that connects the top surface and the front end face. The connecting surface includes an inclined portion inclined relative to a direction perpendicular to the medium facing surface.

Thermally-assisted magnetic recording head including a main pole and a plasmon generator

A capacitor includes a dielectric structure formed of a sintered dielectric, and a first electrode and a second electrode each formed of a conductor. The dielectric structure includes a wall. The first electrode and the second electrode are insulated from each other by the wall. The wall has a height which is a dimension in a first direction, and a thickness which is a dimension in a second direction orthogonal to the first direction, the height being greater than the thickness. The wall has a non-straight shape when seen in the first direction. A manufacturing method for the capacitor includes forming the dielectric structure, and forming the first electrode and the second electrode simultaneously after the formation of the dielectric structure.

Method of manufacturing a capacitor including dielectric structure formed of sintered body

A near-field light generator includes a plasmon generator including a plasmon exciting portion on which a surface plasmon is excited, and a near-field transducer including a front end face that generates near-field light from the surface plasmon. The near-field transducer is formed of a first metal material. The plasmon generator includes a first portion formed of the first metal material and a second portion formed of a second metal material. The first portion is in contact with the near-field transducer. The second portion includes at least part of the plasmon exciting portion.

Near-field light generator and thermally-assisted magnetic recording head

A magnetic head includes a coil, a main pole, a write shield, a lower return path section, and an accommodation section. The accommodation section accommodates at least part of the return path section. A first portion of the accommodation section has a first inclined surface. A second portion of the accommodation section has a second inclined surface. A coil element of the coil has a third inclined surface opposed to the first inclined surface, and a fourth inclined surface opposed to the second inclined surface. The lower return path section includes a first inclined portion extending along the first inclined surface, and a second inclined portion extending along the second inclined surface.

Magnetic head including a return path section

A magnetic head includes a medium facing surface, a coil, a main pole, and a substrate. The main pole includes a first layer, and a second layer lying on the first layer. The first layer includes a thickness-changing portion whose dimension in a direction perpendicular to a top surface of the substrate decreases with decreasing distance to the medium facing surface. At least part of the second layer is located on the thickness-changing portion.

Magnetic head with a main pole including first and second layers and manufacturing method for the same

A manufacturing method for a magnetic head includes the steps of: forming a main pole; forming a spin torque oscillator; and forming a trailing shield. The step of forming the spin torque oscillator includes: a step of forming a layered film; a step of forming an interposition layer; a step of forming a mask; a first etching step of etching a portion of the interposition layer using the mask; a second etching step of etching a portion of the layered film using the mask and the interposition layer as an etching mask; a step of removing the interposition layer and the mask; and a patterning step of patterning the layered film into the spin torque oscillator.

Magnetic head including spin torque oscillator and manufacturing method for the same

A magnetic head includes a main pole, a trailing shield, a spin torque oscillator, and a buffer layer. The buffer layer is interposed between the main pole and the spin torque oscillator. The spin torque oscillator has first and second side surfaces. The first and second side surfaces respectively form first and second angles with respect to a direction perpendicular to a top surface of a substrate. The first and second angles each fall within a range of 0&#xb0; to 10&#xb0;. The buffer layer has third and fourth side surfaces. The third side surface includes a first inclined portion forming a third angle greater than the first angle. The fourth side surface includes a second inclined portion forming a fourth angle greater than the second angle.

A magnetic head includes a main pole and a write shield. The write shield includes a bottom shield, a first side shield and a second side shield. The first side shield has first and second sidewalls. The second side shield has third and fourth sidewalls. Each of the second and fourth sidewalls has a top edge farthest from a top surface of a substrate. The top edge of each of the second and fourth sidewalls is parallel to a medium facing surface. A portion of a top surface of the bottom shield, the first sidewall, and the third sidewall define a receiving section to receive a portion of the main pole. The receiving section has a bottom including a first inclined portion, a second inclined portion, and a third inclined portion.

Magnetic head including a main pole and a write shield

A manufacturing method for a waveguide includes forming a core including a first and a second layer. The first layer has a top surface including a first region opposed to a bottom surface of the second layer, and a second region not opposed to the bottom surface of the second layer. Forming the core includes a step of forming an initial first layer, an etching stopper layer on the second region of the top surface of the initial first layer, an initial second layer on the initial first layer and the etching stopper layer, and a step of etching the initial second layer until the etching stopper layer is exposed, to make the initial second layer into the second layer. A difference between the refractive index of the etching stopper layer and the core is smaller than or equal to 10% of the refractive index of the core.

Waveguide including first and second layers and manufacturing method thereof

A first side shield has a first sidewall and a second sidewall, and a second side shield has a third sidewall and a fourth sidewall. The first to fourth sidewalls have first to fourth edges, respectively, that are farthest from a top surface of a substrate. The distance between a rear end of the first edge and a rear end of the third edge in a track width direction is greater than the distance between a front end of the first edge and a front end of the third edge in the track width direction. The distance between the second edge and the fourth edge in the track width direction increases with increasing distance from the medium facing surface.

Magnetic head for perpendicular magnetic recording including two side shields configured to enable a reduction in width of an end face of the main pole located in a medium facing surface and an increase in cross-sectional area of the main pole in the vicinity of the medium facing surface

A magnetic head includes a coil, and a magnetic path forming section for defining a first space for a portion of the coil to pass through. The magnetic path forming section includes a core section. The coil includes a first winding portion and a second winding portion connected in series. The first winding portion includes one or two first coil elements extending to pass through the first space, and extends once or twice around the entire perimeter of the core section. The second winding portion does not pass through the first space, and extends less than once around the entire perimeter of the core section to rotate n degrees about a center point of the core section, where n is greater than 270 and smaller than 360.

Magnetic head including a coil and a magnetic path forming section

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Milpitas, CA, United States of America

Hiroyuki Ito