公开(公告)号：US06256863B1

公开(公告)日：2001-07-10

申请号：US08815179

申请日：1997-03-11

申请人： Kazuhiro Saito ,  Akiko Saito ,  Hitoshi Iwasaki ,  Akihiko Tsutai ,  Hiroaki Yoda ,  Tadahiko Kobayashi ,  Yuichi Ohsawa ,  Masahi Sahashi ,  Yuzo Kamiguchi

发明人： Kazuhiro Saito ,  Akiko Saito ,  Hitoshi Iwasaki ,  Akihiko Tsutai ,  Hiroaki Yoda ,  Tadahiko Kobayashi ,  Yuichi Ohsawa ,  Masahi Sahashi ,  Yuzo Kamiguchi

IPC分类号： G11B542

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3113 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3916 ,  G11B2005/3996 ,  Y10T29/49034

摘要： A magnetic yoke having a magnetic gap provided in the side of the surface facing the medium is disposed on the surface of a substrate. An MR film is disposed on the surface of the magnetic yoke substantially parallel to the substrate with a predetermined separation from the surface S facing the medium. At least both end portions of the MR film are magnetically coupled to the magnetic yoke. A pair of leads for supplying sensing current to the MR film have magnetic lead portions formed from the same magnetic layers as the magnetic yoke. The magnetic lead portions curb deterioration of MR head properties and yield reduction during formation of the leads. Furthermore, a bias magnetic field is applied to the magnetic yoke and the MR film at least during operation of the head. This bias magnetic field is for instance provided by a magnetic field induced by the electric current. Alternatively, a magnetic field induced by the electric current is applied while heat-processing the magnetic yoke. Magnetic anisotropy is induced to the magnetic yoke in a direction differing according to the position. This magnetic anisotropy curbs Barkhausen noise caused by the magnetic yoke.

摘要翻译： 在基板的表面上设置具有设置在面向介质的表面侧的磁隙的磁轭。 以与面向介质的表面S预定间隔的方式将磁性薄膜基本上平行于基板平行设置在磁轭的表面上。 MR膜的至少两个端部磁耦合到磁轭。 用于向MR膜提供感测电流的一对引线具有由与磁轭相同的磁性层形成的磁性引线部分。 磁性引线部分在引线形成期间抑制MR磁头特性的劣化和屈服减少。 此外，至少在头部的操作期间，向磁轭和MR膜施加偏置磁场。 该偏置磁场例如由电流引起的磁场提供。 或者，在对磁轭进行加热处理的同时施加由电流引起的磁场。 磁性各向异性在根据位置不同的方向上被引到磁轭上。 这种磁各向异性限制了由磁轭引起的Barkhausen噪声。

公开(公告)号：US06198597B1

公开(公告)日：2001-03-06

申请号：US09153858

申请日：1998-09-16

申请人： Kohichi Tateyama ,  Hiroaki Yoda ,  Atsuhito Sawabe ,  Naoyuki Inoue ,  Akio Hori ,  Tadahiko Kobayashi ,  Hiromi Sakata ,  Michiko Hara ,  Takasi Koizumi ,  Tomohiko Nagata ,  Takeo Sakakubo ,  Kei Sakoda

发明人： Kohichi Tateyama ,  Hiroaki Yoda ,  Atsuhito Sawabe ,  Naoyuki Inoue ,  Akio Hori ,  Tadahiko Kobayashi ,  Hiromi Sakata ,  Michiko Hara ,  Takasi Koizumi ,  Tomohiko Nagata ,  Takeo Sakakubo ,  Kei Sakoda

IPC分类号： G11B531

CPC分类号： G11B5/3113 ,  G11B5/3116 ,  G11B5/3163

摘要： A thin-film magnetic head comprises a magnetic gap disposed to be positioned on an air bearing surface of the magnetic head, a pair of magnetic poles disposed to hold the magnetic gap therebetween, and a coil positioned between the pair of the magnetic poles to intersect the magnetic poles, wherein at least one of the magnetic poles being composed of a T-shaped magnetic pole, the T-shaped magnetic pole comprising a front part of a magnetic pole contacting with the magnetic gap, an intermediate part of a magnetic pole lying on the front part, and a rear part of a magnetic pole lying on the intermediate part, wherein a width of the front part roughly defines a track width, the rear part has a wider width in a direction of track width than a width of the front part, and the intermediate part contacts with the rear part at an entire width of the rear part at the air bearing surface and has a narrower width at a contacting face with the front part than the width of the rear part.

摘要翻译： 薄膜磁头包括设置在磁头的空气轴承表面上的磁隙，设置成保持磁隙的一对磁极和位于一对磁极之间的线圈，以相交 磁极，其中至少一个磁极由T形磁极组成，T形磁极包括与磁隙接触的磁极的前部，位于磁极的中间部分 在前部的前部和位于中间部的磁极的后部，前部的宽度大致限定轨道宽度，后部在轨道宽度方向上的宽度比宽度宽 前部，并且中间部分在后部的空气轴承表面的整个宽度处与后部接触，并且在与前部的接触面处具有比后部的宽度更窄的宽度。

公开(公告)号：US5920447A

公开(公告)日：1999-07-06

申请号：US818674

申请日：1997-03-14

申请人： Hiromi Sakata ,  Hiroaki Yoda ,  Tomomi Funayama ,  Kohichi Tateyama ,  Tadahiko Kobayashi ,  Shigeru Takekado ,  Yoichiro Tanaka

发明人： Hiromi Sakata ,  Hiroaki Yoda ,  Tomomi Funayama ,  Kohichi Tateyama ,  Tadahiko Kobayashi ,  Shigeru Takekado ,  Yoichiro Tanaka

IPC分类号： G11B5/012 ,  G11B5/02 ,  G11B5/39 ,  G11B5/48 ,  G11B5/55 ,  G11B23/00 ,  G11B5/29

CPC分类号： G11B5/3967 ,  G11B5/012 ,  G11B5/4826 ,  G11B5/488 ,  G11B5/4886 ,  G11B5/5526 ,  G11B23/0007 ,  G11B5/02

摘要： A magnetic multi-head unit includes: a specific magnetic head formed so that a pair of magnetic yokes face each other on the same plane via a magnetic gap inclined by a predetermined azimuth angle; and a magnetic head which is adjacent to the specific magnetic head and which is formed so that a pair of magnetic yokes face each other on a plane different from the plane of the specific magnetic head via a magnetic gap inclined by the azimuth angle. The specific magnetic head and the adjacent magnetic head are laminated so as to form a plurality of layers while being shifted from each other in directions in which tracks on a magnetic disk extend. A magnetic disk unit includes: a magnetic disk, on which a plurality of information recording tracks are formed so as to extend in peripheral directions and which is rotated; and a magnetic multi-head including a plurality of transducers as heads for simultaneously writing and/or reading magnetic information on the plurality of information recording tracks of the magnetic disk every predetermined group of the tracks. The plurality of transducers are positioned as one with respect to the predetermined group of the tracks.

摘要翻译： 磁性多头单元包括：特定磁头，其形成为使得一对磁轭经由倾斜预定方位角的磁隙在同一平面上彼此面对; 以及磁头，其与特定磁头相邻，并且形成为使得一对磁轭在与特定磁头的平面不同的平面上经由倾斜方位角的磁隙形成。 特定的磁头和相邻的磁头被层叠以形成多个层，同时在磁盘上的磁道延伸的方向上彼此偏移。 磁盘单元包括：磁盘，多个信息记录轨道形成为沿圆周方向延伸并旋转的磁盘; 以及包括多个换能器作为磁头的磁性多磁头，用于在每个预定磁道组中的每个磁盘的多个信息记录磁道上同时写入和/或读取磁信息。 多个换能器相对于预定的轨道组定位成一个。

公开(公告)号：US5565830A

公开(公告)日：1996-10-15

申请号：US158813

申请日：1993-11-29

申请人： Masashi Sahashi ,  Tadahiko Kobayashi

发明人： Masashi Sahashi ,  Tadahiko Kobayashi

IPC分类号： C22C19/07 ,  H01F1/00 ,  H01F1/22 ,  H01L41/20 ,  H01F7/00

CPC分类号： C22C19/07 ,  H01F1/22 ,  H01L41/20

摘要： A rare earth-cobalt supermagnetostrictive alloy having a composition represented by the general formula, in atomic fraction: R (Co.sub.1-x Fe.sub.x).sub.x, wherein 0.001.ltoreq.x.ltoreq.0.8, 0.2.ltoreq.z.ltoreq.15, and R is at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu and is consisting essentially of a cubic system whose easy axis of magnetization is generally or oriented; or R (Co.sub.1-x Fe.sub.x).sub.x, wherein 0.001.ltoreq.x.ltoreq.0.8, 0.2.ltoreq.z.ltoreq.15, and R is at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb, and Lu. Such an alloy exhibits satisfactory magnetostriction in a wide range of temperatures from room temperature to liquid nitrogen temperature.

摘要翻译： 具有由通式表示的组成的稀土钴超磁致伸缩合金，原子分数为R（Co1-xFex）x，其中0.001≤x≤0.8,0.2≤z= 15，和 R是选自Sc，Y，La，Ce，Pr，Nd，Pm，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu中的至少一种元素， 的易磁化轴通常<100>或<110>取向的立方体系; 或R（Co1-xFex）x，其中0.001≤x≤0.8,0.2≤Z≤15，并且R是选自Sc，Y，La，Ce中的至少一种元素 ，Pr，Nd，Sm，Gd，Dy，Er，Yb和Lu。 这种合金在从室温到液氮温度的宽范围的温度范围内表现出令人满意的磁致伸缩。

公开(公告)号：US5260615A

公开(公告)日：1993-11-09

申请号：US723305

申请日：1991-06-28

申请人： Masashi Sahashi ,  Tadahiko Kobayashi ,  Tetsuhiko Mizoguchi

发明人： Masashi Sahashi ,  Tadahiko Kobayashi ,  Tetsuhiko Mizoguchi

IPC分类号： H03H9/25 ,  H03H9/22 ,  H03H9/38 ,  H03H9/42 ,  H01L41/08

CPC分类号： H03H9/426

摘要： A magnetoelastic wave device comprising a substrate, a magnetostrictive film formed over the substrate, a wave generating section, a wave receiving section, and a modulation magnetic field generating section. The magnetostrictive film has an axis of easy magnetization which is substantially axis and extends parallel to the major surfaces of the magnetostrictive film.

摘要翻译： 一种磁弹性波装置，包括基板，形成在基板上的磁致伸缩膜，波发生部，波接收部和调制磁场产生部。 磁致伸缩薄膜具有易磁化的轴线，该轴线基本上是轴线，并平行于磁致伸缩薄膜的主表面延伸。

公开(公告)号：US4762008A

公开(公告)日：1988-08-09

申请号：US31279

申请日：1987-03-30

申请人： Tadahiko Kobayashi ,  Masashi Sahashi ,  Koichiro Inomata

发明人： Tadahiko Kobayashi ,  Masashi Sahashi ,  Koichiro Inomata

IPC分类号： G01L3/10

CPC分类号： G01L3/102 ,  G01L3/103 ,  G01L3/105

摘要： A torque detecting apparatus utilizing a magnetoelastic effect comprising one or more pairs of thin magnetic metal strips affixed to a torque-transmitting shaft subjected to torque detection and having magnetic anisotropy induced in a predetermined direction, and one or more pairs of detecting cores paired with the above one or more pairs of thin magnetic metal strips, fixed in contact with the thin magnetic metal strips, each of the cores of the one or more pairs of detecting cores having a detecting coil wound therearound, In one embodiment, the torque detecting apparatus utilizes a magnetoelastic effect of thin magnetic metal strip wherein the absolute value of saturated magnetostriction constant .lambda.s of the thin magnetic metal strip is less than 1.times.10.sup.-6.

摘要翻译： 一种利用磁弹性效应的扭矩检测装置，其特征在于，包括一对或多对固定在转矩检测用的转矩传递轴上并具有沿预定方向感应的磁各向异性的薄磁性金属条，以及一对或多对检测芯， 在与薄磁性金属带接触固定的一对或多对薄磁性金属带之上，一对或多对检测芯中的每个芯具有卷绕在其上的检测线圈。在一个实施例中，扭矩检测装置利用 薄磁性金属带的磁弹性效应，其中薄磁性金属带的饱和磁致伸缩常数λs的绝对值小于1×10 -6。

公开(公告)号：US20090217674A1

公开(公告)日：2009-09-03

申请号：US12393849

申请日：2009-02-26

申请人： Shiori Kaji ,  Akiko Saito ,  Tadahiko Kobayashi

发明人： Shiori Kaji ,  Akiko Saito ,  Tadahiko Kobayashi

IPC分类号： F25B21/00

CPC分类号： F25B21/00 ,  F25B2321/0021 ,  H01F1/015 ,  Y02B30/66

摘要： There are provided a magnetic material for a magnetic refrigeration apparatus, which improves magnetic refrigeration efficiency by the wide operation temperature range of it, AMR bed using the magnetic material, and a magnetic refrigeration apparatus. The magnetic material is used for the magnetic refrigeration apparatus using a liquid refrigerant, formed by approximately uniformly blending at least two kinds of magnetic particles having different magnetic transition temperatures, and the magnetic particles exhibit an approximately spherical shape with maximum diameter of 0.3 mm or more to 2 mm or less. The AMR bed is filled with the magnetic particles.

摘要翻译： 提供了一种用于磁性制冷装置的磁性材料，其通过其宽的工作温度范围，使用磁性材料的AMR床和磁性制冷装置来提高磁制冷效率。 磁性材料用于使用通过大致均匀地混合至少两种具有不同磁转变温度的磁性颗粒形成的液体制冷剂的磁性制冷装置，并且磁性颗粒呈现最大直径为0.3mm或更大的近似球形 至2mm以下。 AMR床填充有磁性颗粒。

公开(公告)号：US20080078184A1

公开(公告)日：2008-04-03

申请号：US11860818

申请日：2007-09-25

申请人： Akiko SAITO ,  Tadahiko Kobayashi ,  Hideyuki Tsuji ,  Hideo Iwasaki ,  Katsumi Hisano ,  Akihiro Koga ,  Akihiro Kasahara ,  Takuya Takahashi

发明人： Akiko SAITO ,  Tadahiko Kobayashi ,  Hideyuki Tsuji ,  Hideo Iwasaki ,  Katsumi Hisano ,  Akihiro Koga ,  Akihiro Kasahara ,  Takuya Takahashi

IPC分类号： F25B21/00

CPC分类号： F25B21/00 ,  F25B2321/0021 ,  F25B2321/0023 ,  Y02B30/66

摘要： A magnetic refrigerating device includes: a magnetic refrigerating unit including a magnetic material “A” exhibiting a magneto-caloric effect that the temperature of the material “A” is increased by the application of a magnetic field and the temperature of the material “A” is decreased by the removal of a magnetic field, a magnetic material “B” exhibiting a magneto-caloric effect that the temperature of the material “B” is decreased by the application of a magnetic field and the temperature of the material “B” is increased by the removal of a magnetic field, a heat conductive material “a” exhibiting higher heat conductivity under the application of a magnetic field and lower heat conductivity under the removal of a magnetic field, and a heat conductive material “b” exhibiting lower heat conductivity under the application of a magnetic field and higher heat conductivity under the removal of a magnetic field, wherein the magnetic refrigerating unit is configured so as to include at least one layered structure denoted by “AaBb” or “AbBa”; and a magnetic field-applying means to apply a magnetic field to the magnetic refrigerating unit.

摘要翻译： 磁性制冷装置包括：磁性制冷装置，其具有表现出通过施加磁场使材料“A”的温度升高的磁热量效应的磁性材料“A”，并且材料“A”的温度 通过去除磁场而减少磁性材料“B”，表现出通过施加磁场使材料“B”的温度降低的磁热量效应的磁性材料“B”，并且材料“B”的温度为 通过除去磁场而增加，在磁场施加下表现出更高导热性的导热材料“a”，以及在去除磁场时具有较低热导率的导热材料“a”，以及表现出较低热量的导热材料“b” 在磁场的施加下的导电性和更高的导热性，其中磁性制冷单元被配置为包括在列 由“AaBb”或“AbBa”表示的一个分层结构; 以及向磁性制冷装置施加磁场的磁场施加装置。

公开(公告)号：US20070240428A1

公开(公告)日：2007-10-18

申请号：US11689100

申请日：2007-03-21

申请人： Akihiro Koga ,  Katsumi Hisano ,  Hideo Iwasaki ,  Akihiro Kasahara ,  Akiko Saito ,  Tadahiko Kobayashi ,  Takuya Takahashi

发明人： Akihiro Koga ,  Katsumi Hisano ,  Hideo Iwasaki ,  Akihiro Kasahara ,  Akiko Saito ,  Tadahiko Kobayashi ,  Takuya Takahashi

IPC分类号： F25B21/00 ,  F25B7/00

CPC分类号： F25B25/00 ,  F25B21/00 ,  F25B2321/0021 ,  Y02B30/66

摘要： A compact and highly efficient hybrid magnetic refrigerator includes a hybrid refrigerating apparatus wherein an evaporator of a vapor compression refrigeration cycle and a heat exchanger of a magnetic refrigeration cycle are thermally connected. The magnetic refrigeration cycle is provided with a magnetic refrigeration unit in which a magnetic substance dissipates and absorbs heat according to the increase and decrease of a magnetic field in order to heat and cool a refrigerant circulating in its vicinity. The heated refrigerant is cooled by the evaporator of the vapor compression refrigeration cycle and the cooled refrigerant is supplied to the heat exchanger cooling the outside air.

摘要翻译： 一种紧凑且高效率的混合式磁性制冷机包括其中蒸气压缩式制冷循环的蒸发器和磁性制冷循环的热交换器热连接的混合式制冷装置。 磁性制冷循环设置有磁性制冷单元，其中磁性体根据磁场的增加和减少而散热并吸收热量，以便加热和冷却在其附近循环的制冷剂。 加热的制冷剂被蒸气压缩式制冷循环的蒸发器冷却，冷却的制冷剂被供给到冷却外部空气的热交换器。

公开(公告)号：US20060213580A1

公开(公告)日：2006-09-28

申请号：US11365683

申请日：2006-03-02

申请人： Hideyuki Tsuji ,  Akiko Saito ,  Tadahiko Kobayashi

发明人： Hideyuki Tsuji ,  Akiko Saito ,  Tadahiko Kobayashi

IPC分类号： H01F1/057

CPC分类号： H01F1/015 ,  C22C30/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02

摘要： A magnetic material comprising a NaZn13 type crystal structure with uniform and fine microstructure exhibiting excellent characteristics as a magnetic refrigeration material, and a method of manufacturing the magnetic refrigeration material are provided. An alloy composition for forming magnetic material of the NaZn13 type crystal structure was melted comprising 0.5 atomic percent to 1.5 atomic percent of B to molten metal. The molten metal is rapidly cooled and solidified by a forced cooling process. Then, a rapidly cooled alloy having the NaZn13 type crystal structure was obtained. In this manner, magnetic materials comprising the NaZn13 type crystal structure phase, or the NaZn13 type crystal structure phase accompanied with other phases such as α-Fe phase having very small phase regions was manufactured without requiring heat treatment for a long time. As the result, productivity of manufacturing the magnetic refrigeration material is remarkably enhanced.

摘要翻译： 提供了包含具有显示出作为磁性制冷材料的优异特性的均匀和微细微结构的NaZn 13 N型晶体结构的磁性材料以及制造磁性制冷材料的方法。 用于形成NaZn 13型晶体结构的磁性材料的合金组合物熔融包含0.5原子％至1.5原子％的B与熔融金属。 熔融金属通过强制冷却过程迅速冷却和固化。 然后，获得具有NaZn 13 N型晶体结构的快速冷却的合金。 以这种方式，包含NaZn 13+型晶体结构相的磁性材料或NaZn 13 N型晶体结构相伴随着诸如α-Fe相之类的其它相，具有非常小的 在不需要长时间热处理的情况下制造相区。 结果，制造磁性制冷材料的生产率显着提高。