Kabushiki Kaisha Toshiba

Toshiba Electronic Devices & Storage Corporation

Yoshihiro Higashi

Yoshihiko Fuji

Michiko Hara

Akira Kikitsu

Satoshi Shirotori

Tomohiko Nagata

Hideaki Fukuzawa

Shiori Kaji

Akiko Yuzawa

Akio Hori

Kazuaki Okamoto

Hitoshi Iwasaki

Kei Masunishi

Shotaro Baba

Yoshinari Kurosaki

Kenji Otsu

Tazumi Nagasawa

Masayuki Kii

Hiromi Yuasa

Kenichiro Yamada

Motomichi Shibano

Tetsuro Wamura

Masatoshi Sakurai

Kazuhito Higuchi

Takeshi Miyagi

Keiju Yamada

Yusaku Asano

Eizo Fujisawa

Masakazu Yaginuma

Kazuaki Oakamoto

According to one embodiment, a magnetic head includes a first element, a second element, a first shield terminal, a first opposing shield terminal, a second shield terminal, a second opposing shield terminal, a first side shield terminal, a second side shield terminal, and a common side shield terminal. The first element includes a first shield, a first opposing shield, a first side shield, a first opposing side shield, and a first magnetic member. A direction from the first shield to the first opposing shield is along a first direction. The second element includes a second shield, a second opposing shield, a second side shield, a second opposing side shield, and a second magnetic member. A direction from the second shield to the second opposing shield or a direction from the second opposing shield to the second shield is along the first direction.

Magnetic head and magnetic recording device

According to one embodiment, a sensor includes an element portion including a first element, and a controller. The first element includes a first magnetic element including a first magnetic layer and a first opposing magnetic layer, and a first conductive member including a first conductive portion and a first other conductive portion. A second direction from the first other conductive portion to the first conductive portion crosses a first direction from the first magnetic layer to the first opposing magnetic layer. The controller includes a first circuit electrically connected to the first conductive portion and the first other conductive portion, and configured to supply a first current including an AC component to the first conductive member. A local maximum value of the first current is of the first polarity. A local minimum value of the first current is of the first polarity or

Sensor and inspection device

According to one embodiment, a magnetic sensor includes a first element portion that includes a first magnetic element, a first conductive member, a first magnetic member and a first opposing magnetic member. The first magnetic element includes a first end portion and a first other end portion. A direction from the first end portion to the first other end portion is along a first direction. A second direction from the first conductive member to the first magnetic element crosses the first direction. A third direction from the first magnetic member to the first opposing magnetic member crosses a plane including the first and second directions. At least a part of the first magnetic element is between the first magnetic member and the first opposing magnetic member in position in the third direction. The first magnetic member includes a first other magnetic portion and a first magnetic portion.

Magnetic sensor and inspection device

According to one embodiment, a sensor includes an element portion. The element portion includes a first magnetic element, a second magnetic element, a first conductive member, and a second conductive member. The first magnetic element includes a first end portion and a first other end portion. A direction from the first end portion to the first other end portion is along a first direction. The second magnetic element includes a second end portion and a second other end portion. A direction from the second end portion to the second other end portion is along the first direction. The first conductive member includes a first portion, a first other portion, a second portion, and a second other portion. The second conductive member includes a first conductive portion, a first other conductive portion, a second conductive portion, and a second other conductive portion.

According to one embodiment, a magnetic sensor includes an element portion and a conductive layer. The element portion includes a first magnetic element, a second magnetic element, a first conductive member, and a second conductive member. The first magnetic element includes a first end portion and a first other end portion. The second magnetic element includes a second end portion and a second other end portion. The first conductive member includes a first portion and a first other portion. The first portion corresponds to the first end portion. The first other portion corresponds to the first other end portion. The second conductive member includes a second portion and a second other portion. The second portion corresponds to the second end portion. The second other portion corresponds to the second other end portion. The conductive layer includes a first conductive portion and a first other conductive portion.

According to one embodiment, a sensor includes an element portion. The element portion includes a first magnetic member, a first opposing magnetic member, a first element, a second magnetic member, a second opposing magnetic member, a second element, a third element, and a fourth element. The first opposing magnetic member is separated from the first magnetic member in a first direction from the first magnetic member to the first opposing magnetic member. The first element includes a first magnetic layer, a first portion and a first other portion. The second opposing magnetic member is separated from the second magnetic member in the first direction. The second element includes a second magnetic layer, a second portion and a second other portion. The third element includes a third portion and a third other portion. The fourth element includes a fourth portion and a fourth other portion.

According to one embodiment, a sensor includes an element portion including a first element. The first element includes a first magnetic element, a first conductive member, and a first magnetic portion. The first magnetic element includes a first magnetic layer and a first opposing magnetic layer. A length of the first magnetic element along a second direction crossing a first direction from the first magnetic layer to the first opposing magnetic layer is longer than a length of the first magnetic element along a third direction crossing a plane including the first direction and the second direction. The first conductive member includes a first conductive portion and a first other conductive portion. A direction from the first other conductive portion to the first conductive portion is along the second direction. A direction from the first magnetic portion to the first magnetic element is along the second direction.

According to one embodiment, a magnetic sensor includes first to fourth shields, a first magnetic layer, first and second conductive layers, and first and second intermediate layer. The first magnetic layer is between the third shield and the fourth shield. The first magnetic layer includes a first face and a second face. The first face is between the first shield and the second face. The first conductive layer is provided between the third shield and the first magnetic layer. The second conductive layer is provided between the first magnetic layer and the fourth shield. The first intermediate layer is provided between the first shield and the first magnetic layer. The first intermediate layer includes a first intermediate layer face facing the first face. An area of the first intermediate layer face is smaller than an area of the first face.

Magnetic sensor, magnetic head, and magnetic recording device

According to one embodiment, a sensor includes an element portion and a controller. The element portion includes a first element. The first element includes a first magnetic element and a first conductive member. The first magnetic element includes a first magnetic layer and a first opposed magnetic layer. The first conductive member includes a first conductive portion and a first other conductive portion. The controller includes a first circuit. The first circuit is connected to the first conductive portion and the first other conductive portion. The first circuit is configured to supply a first current to the first conductive member. The first current includes an alternating current component. A local minimum value of the first current is of a first polarity, and a local maximum value of the first current is of the first polarity.

Sensor with magnetic layers and inspection device

According to one embodiment, a magnetic head includes first to fourth shields, first to fourth terminals, and first magnetic member. The third shield includes a first partial region and a second partial region. The fourth shield includes a third partial region and a fourth partial region. The first magnetic member is provided between a portion of the first shield and a portion of the second shield in a first direction from the first shield to the second shield. The first magnetic member is provided between the first partial region and the third partial region in a second direction crossing the first direction. The portion of the first shield is located between the second partial region and the fourth partial region in the second direction.

Magnetic head having multiple shields and magnetic recording device

According to one embodiment, a magnetic sensor includes first to sixth shields, first and second magnetic layers, a first member, and first to fourth terminals. The first magnetic layer is provided between the first shield and the second shield. The first magnetic layer is between the third shield and the fourth shield in the second direction. The second magnetic layer is provided between the first magnetic layer and the second shield. The second magnetic layer is between the fifth shield and the sixth shield in the second direction. The second magnetic layer is electrically connected to the fifth shield and the sixth shield. The first member includes a first region and a second region. The first region is provided between the third shield and the first magnetic layer. The second region is provided between the first magnetic layer and the fourth shield.

According to one embodiment, a sensor includes a first magnetic member, a first counter magnetic member, a first magnetic element, and a first magnetic interconnect. A direction from the first magnetic member to the first counter magnetic member is along a first direction. A first gap is provided between the first magnetic member and the first counter magnetic member. The first magnetic element includes a first magnetic region. A second direction from the first magnetic region to the first gap crosses the first direction. A direction from the first magnetic interconnect to the first magnetic region is along the second direction.

According to one embodiment, a magnetic sensor includes a first sensor part. The first sensor part includes a first magnetic member, a first counter magnetic member, and a first magnetic element. A direction from the first magnetic member toward the first counter magnetic member is along a first direction. The first magnetic element includes one or a plurality of first extension parts. The first extension part includes a first magnetic layer, a first counter magnetic layer, and a first nonmagnetic layer. The first magnetic layer includes a first portion, a first counter portion, and a first middle portion. A direction from the first portion toward the first counter portion is along the first direction. The first middle portion is between the first portion and the first counter portion. The first nonmagnetic layer is between the first counter magnetic layer and at least a portion of the first middle portion.

According to one embodiment, a magnetic sensor includes a first magnetic part, a first magnetic member, a second magnetic part, a second magnetic member, a first element, a second element, a third element, a fourth element, and a first interconnect. The first magnetic part includes first, second, and third portions. The first portion is between the second and third portions. The second magnetic part includes fourth, fifth, and sixth portions. The fourth portion is between the fifth and sixth portions. The first element includes a first magnetic layer. The second element includes a second magnetic layer. The third element includes a third magnetic layer. The fourth element includes a fourth magnetic layer. The first interconnect includes first and second interconnect portions.

Magnetic sensor and diagnostic device

According to one embodiment, a sensor includes a first element. The first element includes first and second magnetic members, an insulating member, first and second wirings, a first magnetic element, and a first conductive member. The second magnetic member is separated from the first magnetic member. The insulating member includes a first insulating region. The first insulating region is provided between the first and second magnetic members. The first wiring includes a first connecting region. The second wiring includes a second connecting region. The first magnetic element includes a first magnetic layer and a first opposed magnetic layer. The first magnetic element includes first to fifth partial regions. The first partial region is between the fourth and fifth partial regions. The second partial region is between the fourth and first partial region. The third partial region is between the first and fifth partial regions.

Growing community of inventors

Ishikawa, Japan

Yoshihiro Higashi