公开(公告)号：US20140001398A1

公开(公告)日：2014-01-02

申请号：US13980703

申请日：2012-01-19

申请人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Naoya Kobayashi ,  Chammika Ruwan Polwatta Gallage ,  Kaori Kohara

发明人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Naoya Kobayashi ,  Chammika Ruwan Polwatta Gallage ,  Kaori Kohara

IPC分类号： H01F1/01 ,  H01F41/00

CPC分类号： H01F1/01 ,  B22F1/02 ,  B22F9/22 ,  B22F2999/00 ,  C01B21/0622 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/42 ,  C22C21/00 ,  C22C29/16 ,  H01F1/065 ,  H01F1/083 ,  H01F1/086 ,  H01F41/00 ,  H01F41/0266 ,  B22F2201/013

摘要： The present invention relates to ferromagnetic particles capable of exhibiting a high purity and excellent magnetic properties from the industrial viewpoints and a process for producing the ferromagnetic particles, and also provides an anisotropic magnet, a bonded magnet and a compacted magnet which are obtained by using the ferromagnetic particles. The ferromagnetic particles comprising an Fe16N2 compound phase in an amount of not less than 80% as measured by Mössbauer spectrum and each having an outer shell in which FeO is present in the form of a film having a thickness of not more than 5 nm according to the present invention can be produced by subjecting iron oxide or iron oxyhydroxide having an average major axis diameter of 40 to 5000 nm and an aspect ratio (major axis diameter/minor axis diameter) of 1 to 200 as a starting material to dispersing treatment to prepare aggregated particles; subjecting the iron compound particles passed through a mesh to hydrogen reducing treatment at a temperature of 160 to 420° C.; and then subjecting the resulting particles to nitridation treatment at a temperature of 130 to 170° C.

摘要翻译： 本发明涉及从工业观点出发具有高纯度和优异磁特性的铁磁性颗粒以及制造铁磁性颗粒的方法，并且还提供了各向异性磁体，粘结磁体和压实磁体，它们通过使用 铁磁颗粒。 所述铁磁性粒子包含通过Mössbauer光谱测定的不小于80％的Fe 16 N 2化合物相，并且每个具有外壳，其中FeO以厚度不超过5nm的膜的形式存在，根据 本发明可以通过使平均长轴直径为40〜5000nm，长径比（长轴径/短轴直径）为1〜200的氧化铁或羟基氧化铁作为起始原料进行分散处理而制备 聚集颗粒; 使通过网的铁化合物颗粒在160〜420℃的温度下进行氢还原处理。 然后在130〜170℃的温度下对得到的粒子进行氮化处理。

公开(公告)号：US09378876B2

公开(公告)日：2016-06-28

申请号：US13980703

申请日：2012-01-19

申请人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Naoya Kobayashi ,  Chammika Ruwan Polwatta Gallage ,  Kaori Kohara

发明人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Naoya Kobayashi ,  Chammika Ruwan Polwatta Gallage ,  Kaori Kohara

IPC分类号： H01F1/00 ,  H01F1/06 ,  B22F1/02 ,  B22F9/22 ,  H01F1/01 ,  C22C29/16 ,  H01F41/02 ,  C01B21/06 ,  H01F1/08 ,  H01F41/00 ,  C22C21/00

CPC分类号： H01F1/01 ,  B22F1/02 ,  B22F9/22 ,  B22F2999/00 ,  C01B21/0622 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/42 ,  C22C21/00 ,  C22C29/16 ,  H01F1/065 ,  H01F1/083 ,  H01F1/086 ,  H01F41/00 ,  H01F41/0266 ,  B22F2201/013

摘要： Ferromagnetic particles including an Fe16N2 compound phase in an amount of not less than 80% as measured by Mössbauer spectrum and each having an outer shell in which FeO is present in the form of a film having a thickness of not more than 5 nm. Ferromagnetic particles may be made by subjecting iron oxide or iron oxyhydroxide having an average major axis diameter of 40 to 5000 nm and an aspect ratio (major axis diameter/minor axis diameter) of 1 to 200 as a starting material to dispersing treatment to prepare aggregated particles; subjecting the iron compound particles passed through a mesh to hydrogen reducing treatment at a temperature of 160 to 420° C.; and then subjecting the resulting particles to nitridation treatment at a temperature of 130 to 170° C.

摘要翻译： 包含Fe6N2化合物相的铁磁性粒子，其量通过莫斯鲍尔光谱测定为不小于80％，并且各自具有其中FeO以厚度不大于5nm的膜的形式存在的外壳。 铁磁颗粒可以通过使平均长轴直径为40〜5000nm，长径比（长轴径/短轴直径）为1〜200的氧化铁或羟基氧化铁作为起始原料进行分散处理，制成凝集体 粒子; 使通过网的铁化合物颗粒在160〜420℃的温度下进行氢还原处理。 然后在130〜170℃的温度下对得到的粒子进行氮化处理。

公开(公告)号：US20130257573A1

公开(公告)日：2013-10-03

申请号：US13825584

申请日：2011-09-22

申请人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Akimasa Sakuma ,  Naoya Kobayashi ,  Chammika Ruwan Polwatta Gallage ,  Kaori Kohara

发明人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Akimasa Sakuma ,  Naoya Kobayashi ,  Chammika Ruwan Polwatta Gallage ,  Kaori Kohara

IPC分类号： H01F7/02 ,  H01F41/02

CPC分类号： H01F7/02 ,  B22F9/22 ,  B22F2998/10 ,  B22F2999/00 ,  B82Y30/00 ,  C01B21/0602 ,  C01B21/0622 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/42 ,  C22C29/16 ,  H01F1/065 ,  H01F1/083 ,  H01F41/02 ,  Y10T428/2982 ,  B22F2201/013 ,  B22F1/0088 ,  B22F2201/016 ,  C22C33/0235 ,  B22F1/0085

摘要： The present invention relates to ferromagnetic particles comprising an Fe16N2 compound phase in an amount of not less than 70% as measured by Mössbauer spectrum, and at least one metal element X selected from the group consisting of Mn, Ni, Ti, Ga, Al, Ge, Zn, Pt and Si in such an amount that a molar ratio of the metal element X to Fe is 0.04 to 25%, the ferromagnetic particles having a BHmax value of not less than 5 MGOe, and a process for producing the ferromagnetic particles, and further relates to an anisotropic magnet or a bonded magnet which is obtained by magnetically orienting the ferromagnetic particles. The ferromagnetic particles according to the present invention can be produced in an industrial scale and are in the form of Fe16N2 particles comprising different kinds of metal elements having a large BHmax value.

摘要翻译： 本发明涉及由Mössbauer光谱测定的不少于70％的Fe 16 N 2化合物相和至少一种选自Mn，Ni，Ti，Ga，Al的金属元素X的铁磁性颗粒， Ge，Zn，Pt和Si，金属元素X与Fe的摩尔比为0.04〜25％，BHmax值为5MGOe以上的铁磁性粒子，以及铁磁性粒子的制造方法 并且还涉及通过磁性取向铁磁性颗粒获得的各向异性磁体或粘结磁体。 根据本发明的铁磁颗粒可以以工业规模生产，并且是包含具有大的BHmax值的不同种类的金属元素的Fe16N2颗粒的形式。

公开(公告)号：US20140085023A1

公开(公告)日：2014-03-27

申请号：US14113711

申请日：2012-04-26

申请人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Naoya Kobayashi ,  Chammika Ruwan Polwatta Gallage ,  Kaori Kohara

发明人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Naoya Kobayashi ,  Chammika Ruwan Polwatta Gallage ,  Kaori Kohara

IPC分类号： H01F1/01 ,  H01F41/02

CPC分类号： H01F1/01 ,  B22F9/22 ,  C01B21/0622 ,  C01P2004/51 ,  C01P2004/54 ,  C01P2006/12 ,  C01P2006/42 ,  C22C38/001 ,  C22C2202/02 ,  H01F1/065 ,  H01F1/083 ,  H01F41/0266

摘要： The present invention relates to ferromagnetic particles capable of exhibiting a high purity and excellent magnetic properties from the industrial viewpoints and a process for producing the ferromagnetic particles, and also provides an anisotropic magnet, a bonded magnet and a compacted magnet which are obtained by using the ferromagnetic particles. The ferromagnetic particles comprising an Fe16N2 compound phase in an amount of not less than 80% as measured by Mössbauer spectrum and each having an outer shell in which FeO is present in the form of a layer having a thickness of not more than 5 nm according to the present invention can be produced by subjecting aggregated particles of an iron compound as a starting material whose primary particles have a ratio of [(average deviation of major axis lengths of particles)/(average major axis length of particles)] of not more than 50%, Uc of not more than 1.55, Cg of not less than 0.95, Cg2 of not less than 0.40, an average major axis length of 40 to 5000 nm, and an aspect ratio (major axis diameter/minor axis diameter) of 1 to 200, to dispersing treatment; then subjecting the iron compound particles passed through a mesh screen to reducing treatment at a temperature of 160 to 420° C.; and subjecting the resulting particles to nitridation treatment at a temperature of 130 to 170° C.

摘要翻译： 本发明涉及从工业观点出发具有高纯度和优异磁特性的铁磁性颗粒以及制造铁磁性颗粒的方法，并且还提供了各向异性磁体，粘结磁体和压实磁体，它们通过使用 铁磁颗粒。 铁磁性颗粒包含通过Mössbauer光谱测量的不小于80％的Fe 16 N 2化合物相，并且每个具有外壳，其中FeO以厚度不大于5nm的层的形式存在，根据 本发明可以通过使铁化合物的凝集颗粒作为起始材料，其一次颗粒具有[（颗粒的长轴长度的平均偏差）/（颗粒的平均长轴长度）]的比例不大于 50％，Uc为1.55以下，Cg为0.95以上，Cg2为0.40以上，平均长轴长为40〜5000nm，纵横比（长轴径/短轴直径）为1 至200，分散处理; 然后使经过筛网的铁化合物粒子在160〜420℃的温度下进行还原处理。 并在130-170℃的温度下对所得颗粒进行氮化处理。

公开(公告)号：US20120244356A1

公开(公告)日：2012-09-27

申请号：US13503215

申请日：2010-10-19

申请人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Naoya Kobayashi

发明人： Migaku Takahashi ,  Tomoyuki Ogawa ,  Yasunobu Ogata ,  Naoya Kobayashi

IPC分类号： H01F1/11 ,  B05D3/10 ,  C01B21/06 ,  H01F41/00 ,  B82Y40/00 ,  B82Y30/00

CPC分类号： H01F1/0533 ,  B82Y30/00 ,  C01B21/0622 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/42 ,  H01F1/06 ,  H01F1/061 ,  H01F1/08 ,  Y10T428/2982

摘要： The present invention relates to Fe16N2 particles in the form of a single phase which are obtained by subjecting iron oxide or iron oxyhydroxide whose surface may be coated with at least alumina or silica, if required, as a starting material, to reducing treatment and nitridation treatment, a process for producing the Fe16N2 particles in the form of a single phase for a heat treatment time of not more than 36 hr, and further relates to an anisotropic magnet or a bonded magnet which is obtained by magnetically orienting the Fe16N2 particles in the form of a single phase. The Fe16N2 particles according to the present invention can be produced in an industrial scale and have a large BHmax value.

摘要翻译： 本发明涉及单相形式的Fe16N2颗粒，其通过使表面可以至少涂覆氧化铝或二氧化硅的氧化铁或羟基氧化铁（如果需要）作为起始原料来进行还原处理和氮化处理而获得 制造热处理时间不超过36小时的单相形式的Fe 16 N 2颗粒的方法，还涉及通过磁性取向Fe16N2颗粒的形式获得的各向异性磁体或粘结磁体 的单相。 根据本发明的Fe 16 N 2颗粒可以以工业规模生产并具有大的BHmax值。

公开(公告)号：US08081394B2

公开(公告)日：2011-12-20

申请号：US12890010

申请日：2010-09-24

申请人： Migaku Takahashi ,  Masakiyo Tsunoda ,  Shin Saito ,  Tomoyuki Ogawa ,  Itaru Fujimura ,  Shigeyoshi Misawa ,  Toshiyuki Kawasaki

发明人： Migaku Takahashi ,  Masakiyo Tsunoda ,  Shin Saito ,  Tomoyuki Ogawa ,  Itaru Fujimura ,  Shigeyoshi Misawa ,  Toshiyuki Kawasaki

IPC分类号： G11B5/02 ,  G02B6/10 ,  G01N21/55 ,  G01J3/44 ,  G11C8/00

CPC分类号： G11C11/14 ,  B82Y10/00 ,  G11B9/02 ,  G11B11/00 ,  G11C13/04

摘要： An information recording apparatus has a plurality of fine particles forming an array on a plane in close proximity of each other, each of the plural particles including a ferromagnetic metal, a light-emitting device for exciting a near-field light, and a photo-electric conversion element for detecting a near-field light traveled along the fine particles. Summary information may be recorded for plural information recording parts.

摘要翻译： 信息记录装置具有在彼此靠近的平面上形成阵列的多个细颗粒，所述多个颗粒中的每一个包括强磁性金属，用于激发近场光的发光装置和光电二极管， 电转换元件，用于检测沿着细颗粒行进的近场光。 可以记录多个信息记录部分的摘要信息。

公开(公告)号：US20110007582A1

公开(公告)日：2011-01-13

申请号：US12890010

申请日：2010-09-24

申请人： Migaku Takahashi ,  Masakiyo Tsunoda ,  Shin Saito ,  Tomoyuki Ogawa ,  Itaru Fujimura ,  Shigeyoshi Misawa ,  Toshiyuki Kawasaki

发明人： Migaku Takahashi ,  Masakiyo Tsunoda ,  Shin Saito ,  Tomoyuki Ogawa ,  Itaru Fujimura ,  Shigeyoshi Misawa ,  Toshiyuki Kawasaki

IPC分类号： G11C7/00

CPC分类号： G11C11/14 ,  B82Y10/00 ,  G11B9/02 ,  G11B11/00 ,  G11C13/04

摘要： An information recording apparatus comprises a plurality of fine particles forming an array on a plane in close proximity of each other, each of the plural particles including a ferromagnetic metal, a light-emitting device for exciting a near-field light, and a photo-electric conversion element for detecting a near-field light traveled along the fine particles.

摘要翻译： 信息记录装置包括在彼此靠近的平面上形成阵列的多个细颗粒，所述多个颗粒中的每一个包括强磁性金属，用于激发近场光的发光装置， 电转换元件，用于检测沿着细颗粒行进的近场光。

公开(公告)号：US07826174B2

公开(公告)日：2010-11-02

申请号：US11730338

申请日：2007-03-30

申请人： Migaku Takahashi ,  Masakiyo Tsunoda ,  Shin Saito ,  Tomoyuki Ogawa ,  Itaru Fujimura ,  Shigeyoshi Misawa ,  Toshiyuki Kawasaki

发明人： Migaku Takahashi ,  Masakiyo Tsunoda ,  Shin Saito ,  Tomoyuki Ogawa ,  Itaru Fujimura ,  Shigeyoshi Misawa ,  Toshiyuki Kawasaki

IPC分类号： G11B21/02 ,  G02B6/10 ,  G01N21/55 ,  G01J3/44 ,  G11C8/00

CPC分类号： G11C11/14 ,  B82Y10/00 ,  G11B9/02 ,  G11B11/00 ,  G11C13/04

摘要： An information recording apparatus comprises a plurality of fine particles forming an array on a plane in close proximity of each other, each of the plural particles including a ferromagnetic metal, a light-emitting device for exciting a near-field light, and a photo-electric conversion element for detecting a near-field light traveled along the fine particles.

摘要翻译： 信息记录装置包括在彼此靠近的平面上形成阵列的多个细颗粒，所述多个颗粒中的每一个包括强磁性金属，用于激发近场光的发光装置， 电转换元件，用于检测沿着细颗粒行进的近场光。

公开(公告)号：US20070230233A1

公开(公告)日：2007-10-04

申请号：US11730338

申请日：2007-03-30

申请人： Migaku Takahashi ,  Masakiyo Tsunoda ,  Shin Saito ,  Tomoyuki Ogawa ,  Itaru Fujimura ,  Shigeyoshi Misawa ,  Toshiyuki Kawasaki

发明人： Migaku Takahashi ,  Masakiyo Tsunoda ,  Shin Saito ,  Tomoyuki Ogawa ,  Itaru Fujimura ,  Shigeyoshi Misawa ,  Toshiyuki Kawasaki

IPC分类号： G11C11/22

CPC分类号： G11C11/14 ,  B82Y10/00 ,  G11B9/02 ,  G11B11/00 ,  G11C13/04

摘要： An information recording apparatus comprises a plurality of fine particles forming an array on a plane in close proximity of each other, each of the plural particles including a ferromagnetic metal, a light-emitting device for exciting a near-field light, and a photo-electric conversion element for detecting a near-field light traveled along the fine particles.

摘要翻译： 信息记录装置包括在彼此靠近的平面上形成阵列的多个细颗粒，所述多个颗粒中的每一个包括强磁性金属，用于激发近场光的发光装置， 电转换元件，用于检测沿着细颗粒行进的近场光。

公开(公告)号：US08421694B2

公开(公告)日：2013-04-16

申请号：US12871437

申请日：2010-08-30

申请人： Naoki Iso ,  Haruyuki Watanabe ,  Morihiko Ikegaya ,  Tomoyuki Ogawa

发明人： Naoki Iso ,  Haruyuki Watanabe ,  Morihiko Ikegaya ,  Tomoyuki Ogawa

IPC分类号： H01Q21/00

CPC分类号： H01Q21/28

摘要： There is provided a composite antenna device for responding to waves in a plurality of radio frequency bands, including: a sheet of conductor plate; a first antenna provided on the sheet of conductor plate for responding to a linearly-polarized wave in at least one radio frequency band; and a second antenna provided on the sheet of conductor plate for responding to a circularly-polarized wave in a radio frequency band that is different from the at least one radio frequency band, wherein the first antenna has a ground portion, the second antenna is formed in an area in the ground portion, and each of the first antenna and the second antenna has a feeding point.

摘要翻译： 提供了一种用于响应多个无线电频带中的波的复合天线装置，包括：导体板片; 设置在所述导体板片上的用于响应于至少一个射频带中的线偏振波的第一天线; 以及第二天线，其设置在所述导体板片上，用于对与所述至少一个射频区别的射频区域中的圆偏振波进行响应，其中，所述第一天线具有接地部，所述第二天线形成 在接地部分的区域中，第一天线和第二天线中的每一个具有馈电点。