Sony Corporation

Sony Group Corporation

Sony Semiconductor Solutions Corporation

Kazuhiro Bessho

Masanori Hosomi

Yutaka Higo

Hiroyuki Ohmori

Kazutaka Yamane

Hiroyuki Uchida

Tetsuya Asayama

Hiroshi Kano

Tetsuya Yamamoto

Yuki Oishi

Kazuhiro Ohba

Tetsuya Mizuguchi

Takeyuki Sone

Minoru Ikarashi

Yoh Iwasaki

Shinichiro Kusunoki

Yo Sato

Naoki Hase

Kazuhiko Hayashi

Teiichi Miyauchi

Hiroaki Narisawa

Keitaro Endo

Shinya Kubo

Kuzutaka Yamane

Tetsuo Mizuguchi

A storage element includes a layer structure including a storage layer having a direction of magnetization which changes according to information, a magnetization fixed layer having a fixed direction of magnetization, and an intermediate layer disposed therebetween, which intermediate layer contains a nonmagnetic material. The magnetization fixed layer has at least two ferromagnetic layers having a direction of magnetization tilted from a direction perpendicular to a film surface, which are laminated and magnetically coupled interposing a coupling layer therebetween. This configuration may effectively prevent divergence of magnetization reversal time due to directions of magnetization of the storage layer and the magnetization fixed layer being substantially parallel or antiparallel, reduce write errors, and enable writing operation in a short time.

Storage element and storage apparatus

A storage element including a storage layer configured to hold information by use of a magnetization state of a magnetic material, with a pinned magnetization layer being provided on one side of the storage layer, with a tunnel insulation layer, and with the direction of magnetization of the storage layer being changed through injection of spin polarized electrons by passing a current in the lamination direction, so as to record information in the storage layer, wherein a spin barrier layer configured to restrain diffusion of the spin polarized electrons is provided on the side, opposite to the pinned magnetization layer, of the storage layer; and the spin barrier layer includes at least one material selected from the group composing of oxides, nitrides, and fluorides.

Storage element and memory

A memory element including a layered structure including a memory layer having magnetization perpendicular to a film face in which a direction of the magnetization is changed depending on information stored therein, a magnetization-fixed layer having magnetization perpendicular to the film face, which becomes a base of the information stored in the memory layer, and an intermediate layer that is formed of a non-magnetic material and is provided between the memory layer and the magnetization-fixed layer.

Memory element, memory apparatus

A storage element is provided. The storage element includes a memory layer; a fixed magnetization layer; an intermediate layer including a non-magnetic material; wherein the intermediate layer is provided between the memory layer and the fixed magnetization layer; wherein the fixed magnetization layer includes at least a first magnetic layer, a second magnetic layer, and a non-magnetic layer, and wherein the first magnetic layer includes a CoFeB composition. A memory apparatus and a magnetic head are also provided.

Storage element

A magnetic element is provided. The magnetic element includes a free magnetization layer having a surface area that is approximately 1,600 nm2 or less, the free magnetization layer including a magnetization state that is configured to be changed; an insulation layer coupled to the free magnetization layer, the insulation layer including a non-magnetic material; and a magnetization fixing layer coupled to the insulation layer opposite the free magnetization layer, the magnetization fixing layer including a fixed magnetization so as to be capable of serving as a reference of the free magnetization layer.

Magnetic element

Provided is a magnetic storage element including a stack structure which includes a fixed layer whose magnetization direction is fixed, a storage layer whose magnetization direction is reversible, and a non-magnetic layer sandwiched between the fixed layer and the storage layer. The magnetization direction has a direction along a stack direction of the stack structure, and the fixed layer or the storage layer has a region which contains at least one contained element selected from the element group consisting of B, C, N, Al, Mg, and Si at 30 atm % or more and 80 atm % or less.

Magnetic storage element, magnetic head, magnetic storage device, electronic apparatus, and method for manufacturing magnetic storage element

There is provided a magnetic storage element including: a storage layer; a reference layer provided at least one surface side of the storage layer with a non-magnetic layer in between; a magnetization fixation layer provided at a surface side opposite to a surface of the reference layer at which the storage layer is provided, with a non-magnetic layer in between; and a magnetization assist layer provided at a surface side opposite to a surface of the magnetization fixation layer at which the reference layer is provided, with a non-magnetic layer in between, in which change in a magnetization direction is easier than in the storage layer.

Magnetic storage element

A magnetoresistive element includes: a first laminated structure body having a first surface and a second surfaceB facing the first surface; and a second laminated structure body formed by laminating a storage layer, an intermediate layer, and a magnetization fixed layer, the second laminated structure body having a first surface and a second surface facing the first surface, the first surface being positioned facing the second surface of the first laminated structure body. The first laminated structure body has a laminated structure including, from the first surface side of the first laminated structure body, a first layer made of a metal nitride and a second layer made of ruthenium or a ruthenium compound.

Magnetoresistive element and electronic device having high heat resistance

The present technology relates to a storage device that realizes both a high information retention property and a low power consumption. A storage device includes a fixed layer, a storage layer, an intermediate layer, and a heat generation layer. The fixed layer includes a first ferromagnetic layer that includes a fixed perpendicular magnetization. The storage layer includes a second ferromagnetic layer that includes a perpendicular magnetization invertible by a spin injection. The intermediate layer is formed of an insulator and is arranged between the storage layer and the fixed layer. The heat generation layer is formed of a resistance heating element and is arranged in at least one of the storage layer and the fixed layer. With this configuration, it becomes possible to provide a storage device that realizes both a high information retention property and a low power consumption.

Storage device, storage apparatus, magnetic head, and electronic apparatus

To provide a magnetic storage element, a magnetic storage device, and an electronic device which store multi-value information with a simpler structure. A magnetic storage element provided with a plurality of tunnel junction elements each of which includes a reference layer having a fixed magnetization direction, a storage layer capable of reversing a magnetization direction, and an insulator layer interposed between the reference layer and the storage layer, the plurality of tunnel junction elements electrically connected to each other in parallel, in which the plurality of tunnel junction elements has film configurations identical to each other, respective layers of the film configurations formed by using a same material to have a same thickness, and each of cross-sectional shapes obtained by cutting the plurality of tunnel junction elements in a laminating direction is a polygonal shape including upper and lower sides parallel to each other with a ratio of the lower side to the upper side different for each of the plurality of tunnel junction elements.

Magnetic storage element, magnetic storage device, electronic device, and method of manufacturing magnetic storage element

There is disclosed an information storage element including a first layer including a ferromagnetic layer with a magnetization direction perpendicular to a film face; an insulation layer coupled to the first layer; and a second layer coupled to the insulation layer opposite the first layer, the second layer including a fixed magnetization so as to be capable of serving as a reference of the first layer. The first layer is capable of storing information according to a magnetization state of a magnetic material, and the magnetization state is configured to be changed by a spin injection. A magnitude of an effective diamagnetic field which the first layer receives is smaller than a saturated magnetization amount of the first layer.

Growing community of inventors

Kanagawa, Japan

Kazuhiro Bessho