公开(公告)号：US20210025765A1

公开(公告)日：2021-01-28

申请号：US16969015

申请日：2018-03-06

申请人： TDK Corporation

发明人： Shinji HARA ,  Naoki OHTA ,  Susumu AOKI ,  Eiji KOMURA ,  Akimasa KAIZU

IPC分类号： G01K7/22 ,  H01C7/06

摘要： A heat utilizing device is provided in which the thermal resistance of the wiring layer is increased while an increase in electric resistance of the wiring layer is limited. Heat utilizing device has thermistor whose electric resistance changes depending on temperature; and wiring layer that is connected to thermistor. A mean free path of phonons in wiring layer is smaller than a mean free path of phonons in an infinite medium that consists of a material of wiring layer.

公开(公告)号：US20190228894A1

公开(公告)日：2019-07-25

申请号：US16235089

申请日：2018-12-28

申请人： TDK CORPORATION

发明人： Shinji HARA ,  Akimasa KAIZU

IPC分类号： H01F10/32 ,  H01F41/32 ,  H03H11/04 ,  H03H11/16 ,  H03F15/00 ,  H01L43/02 ,  H01L43/10 ,  H01L43/12

摘要： The magnetoresistance effect device includes: a magnetoresistance effect element that includes a first magnetization free layer, a magnetization fixed layer or a second magnetization free layer, and a spacer layer interposed between the first magnetization free layer and the magnetization fixed layer or the second magnetization free layer; and a magnetic material part that applies a magnetic field to the magnetoresistance effect element, wherein the magnetic material part is arranged to surround an outer circumference of the magnetoresistance effect element in a plan view in a stacking direction L of the magnetoresistance effect element.

公开(公告)号：US20150170677A1

公开(公告)日：2015-06-18

申请号：US14566028

申请日：2014-12-10

申请人： TDK CORPORATION

发明人： Tsutomu AOYAMA ,  Akimasa KAIZU ,  Tetsuhito SHINOHARA ,  Yoshikazu SOENO

IPC分类号： G11B5/09

CPC分类号： G11B5/02 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/66 ,  G11B2005/0024

摘要： A magnetic recording and reproducing apparatus includes a magnetic recording medium including a recording layer in which at least two magnetic layers are layered on a non-magnetic substrate; and a magnetic head including a main magnetic pole for applying a recording magnetic field in a direction substantially perpendicular to a recording face of the magnetic recording medium and a microwave generating element that generates a microwave magnetic field. The relationship between a thickness Ts of a magnetic layer having a lowest magnetic anisotropy energy among the at least two magnetic layers composing the recording layer of the magnetic recording medium, and a thickness Tt of the recording layer is Ts/Tt≦0.2. The microwave generating element applies the microwave magnetic field having a width broader than the width of the recording magnetic field generated by the main magnetic pole of the magnetic head to the magnetic recording medium.

摘要翻译： 一种磁记录和再现装置包括：磁记录介质，其包括在非磁性基板上层叠有至少两个磁性层的记录层; 以及包括用于在基本上垂直于磁记录介质的记录面的方向上施加记录磁场的主磁极的磁头和产生微波磁场的微波产生元件。 构成磁记录介质的记录层的至少两个磁性层中的具有最低磁各向异性能的磁性层的厚度Ts与记录层的厚度Tt之间的关系为Ts / Tt＆nlE; 0.2。 微波产生元件将具有比由磁头的主磁极产生的记录磁场的宽度宽的宽度的微波磁场施加到磁记录介质。

公开(公告)号：US20190180901A1

公开(公告)日：2019-06-13

申请号：US16204502

申请日：2018-11-29

申请人： TDK CORPORATION

发明人： Akimasa KAIZU ,  Naomichi DEGAWA ,  Tetsuya ROPPONGI

IPC分类号： H01F10/32 ,  H01L43/02 ,  H03H11/04 ,  H01L27/22 ,  H03B15/00 ,  H03H11/16 ,  H03F15/00

摘要： At least one magnetoresistance effect element and a magnetic field applying unit to apply a magnetic field to the magnetoresistance effect element, the magnetic field applying unit includes a first ferromagnetic material having a portion protruding to the magnetoresistance effect element side in a stacking direction of the magnetoresistance effect element, a second ferromagnetic material sandwiching the magnetoresistance effect element with the first ferromagnetic material, and a coil wound around the first ferromagnetic material, a first magnetization free layer of the magnetoresistance effect element has a portion free of overlapping with at least one of a second surface of the protruding portion on the magnetoresistance effect element side and a third surface of the second ferromagnetic material on the magnetoresistance effect when viewed in the stacking direction, and a center of gravity of the first magnetization free layer, positioned in a region connecting the second surface and the third surface.

公开(公告)号：US20130242430A1

公开(公告)日：2013-09-19

申请号：US13791306

申请日：2013-03-08

申请人： TDK CORPORATION

发明人： Tsutomu AOYAMA ,  Yoshikazu SOENO ,  Akimasa KAIZU

IPC分类号： G11B5/706

CPC分类号： G11B5/70621 ,  G11B5/65 ,  G11B5/70605 ,  G11B5/851

摘要： Ion irradiation is applied to the surface of a recording layer which has a granular structure containing ferromagnetic particles which are composed of an L10 ordered alloy and a non-magnetic intergranular layer, thereby the ferromagnetic particles in the side of the substrate are transformed into an L10 ordered alloy having a high magnetic anisotropy, and the ferromagnetic particles in the side of the surface of the medium are transformed into an A1 disordered alloy having a low magnetic anisotropy.

摘要翻译： 离子照射被施加到具有包含由L10有序合金和非磁性晶间层构成的铁磁性粒子的粒状结构的记录层的表面，由此将基板侧的铁磁性粒子变换为L10 具有高磁各向异性的有序合金，介质表面侧的铁磁性粒子转变为具有低磁各向异性的A1无序合金。