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公开(公告)号：US06475302B2
公开(公告)日：2002-11-05
申请号：US09749803
申请日：2000-12-28
申请人： Wu Mei , Toshiya Sakamoto , Shinya Sakurada , Takao Sawa , Akihiko Tsutai , Akiko Saito , Masashi Sahashi
发明人： Wu Mei , Toshiya Sakamoto , Shinya Sakurada , Takao Sawa , Akihiko Tsutai , Akiko Saito , Masashi Sahashi
IPC分类号： H01F1055
CPC分类号： H01F1/058 , H01F1/0306 , H01F1/055 , H01F1/057
摘要： Disclosed is a permanent magnet which comprises an alloy containing a hard magnetic phase having a ThMn12 type tetragonal structure and a nonmagnetic phase. The alloy is represented by a general formula given below: [R1-a(M1)a][T1-b-c(M2)b(M3)c]dx&agr; where R is at least one rare earth element (including Y), Ml is at least one element selected from the group consisting of Zr and Hf, T is at least one element selected from the group consisting of Fe, Co and Ni, M2 is at least one element selected from the group consisting of Cu, Bi, Sn, Mg, In and Pb, M3 is at least one element selected from the group consisting of Al, Ga, Ge, Zn, B, P and S, X is at least one element selected from the group consisting of Si, Ti, V, Cr, Mn, Nb, Mo, Ta and W, and the atomic ratios of a, b, c, d and &agr; fall within the ranges of 0≦a≦0.6, 0.01≦b≦0.20, 0≦c≦0.05, 6≦d≦11, and 0.5≦&agr;≦2.0.
摘要翻译： 公开了一种永磁体，其包含含有ThMn 12型四方晶系的硬磁相和非磁性相的合金。 该合金由以下给出的通式表示：其中R是至少一种稀土元素（包括Y），M1是选自Zr和Hf中的至少一种元素，T是至少一种选自 由Fe，Co和Ni构成的组，M2是选自Cu，Bi，Sn，Mg，In和Pb中的至少一种元素，M3是选自Al，Ga，Ge中的至少一种元素 ，Zn，B，P和S中的至少一种，X是选自由Si，Ti，V，Cr，Mn，Nb，Mo，Ta和W组成的组中的至少一种元素，并且a，b，c， d和α落在0 <= a <= 0.6,0.01 <= b <= 0.20,0 <= c <= 0.05,6 <= d <= 11和0.5 <=α<2.0的范围内。
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公开(公告)号：US5716462A
公开(公告)日：1998-02-10
申请号：US671595
申请日：1996-06-28
申请人： Shinya Sakurada , Akihiko Tsutai , Takahiro Hirai , Yoshitaka Yanagita , Masashi Sahashi , Tomohisa Arai , Keisuke Hashimoto
发明人： Shinya Sakurada , Akihiko Tsutai , Takahiro Hirai , Yoshitaka Yanagita , Masashi Sahashi , Tomohisa Arai , Keisuke Hashimoto
CPC分类号： H01F1/057 , H01F1/0578 , H01F1/058 , H01F1/059
摘要： There is provided a magnetic material having a TbCu.sub.7 phase as a principal phase and excellent in residual magnetic flux density. This magnetic material is formed of a composition represented by a general formula: R1.sub.x R2.sub.y B.sub.z A.sub.u M.sub.100-x-y-z-u wherein R1 is at least one element selected from rare earth elements including Y; R2 is at least one element selected from Zr, Hf and Sc; A is at least one element selected from H, N, C and P; M is at least one element selected from Fe and Co; x, y, z and u represent are atomic percent individually defined as 2.ltoreq.x, 2.ltoreq.x+y.ltoreq.20, 0.001.ltoreq.z.ltoreq.10, 0.ltoreq.u.ltoreq.20; and a principal phase of the magnetic material having a TbCu.sub.7 type crystal structure.
摘要翻译： 提供了具有TbCu7相作为主相的磁性材料，并且剩余磁通密度优异。 该磁性材料由通式R1xR2yBzAuM100-x-y-z-u表示的组合物形成，其中R1为选自包括Y在内的稀土元素中的至少一种元素; R2是选自Zr，Hf和Sc中的至少一种元素; A是选自H，N，C和P中的至少一种元素; M是选自Fe和Co中的至少一种元素; x，y，z和u表示的是原子百分比，分别定义为2，x，2，...，x，y = 20,0.001， 20; 以及具有TbCu7型晶体结构的磁性材料的主相。
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公开(公告)号：US5482573A
公开(公告)日：1996-01-09
申请号：US961821
申请日：1992-10-16
申请人： Shinya Sakurada , Takahiro Hirai , Akihiko Tsutai , Masashi Sahashi , Hideo Nagai , Tsutomu Yamashita
发明人： Shinya Sakurada , Takahiro Hirai , Akihiko Tsutai , Masashi Sahashi , Hideo Nagai , Tsutomu Yamashita
摘要： A magnetic material with an improved maximum energy product useful for high performance permanent magnet, bond magnet and other applications is disclosed. The magnetic material is expressed in a general formula R1.sub.x R2.sub.y M.sub.100-x-y where R1 is at least one element selected from the rare earth elements, R2 is at least one element selected from elements having an atomic radius in a range of 0.156 to 0.174 nm, M is at least one element selected from Fe and Co and x and y are atomic percent individually defined as x.gtoreq.2, y.gtoreq.0.01 and 4.ltoreq.x+y.ltoreq.20, and M occupying 90 atomic percent or more in the principal phase of the compound.
摘要翻译： 公开了一种具有用于高性能永磁体，粘结磁体和其他应用的改进的最大能量积的磁性材料。 磁性材料以通式R1xR2yM100-xy表示，其中R1是选自稀土元素中的至少一种元素，R2是选自原子半径在0.156至0.174nm范围内的元素中的至少一种元素，M是 选自Fe和Co中的至少一种元素和x和y分别定义为x> / = 2，y> / = 0.01和4
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公开(公告)号：US5480495A
公开(公告)日：1996-01-02
申请号：US86379
申请日：1993-07-06
CPC分类号： H01F1/0593 , H01F1/055
摘要： Disclosed is a magnetic material which suppresses formation of impurity phase of Fe, Co or Fe-Co alloy, possesses a stable ThMn.sub.12 crystal structure as the principal phase, and is excellent in magnetic properties and lower in cost. Such magnetic material is expressed in a general formula:R1.sub.x R2.sub.y Si.sub.z M.sub.u T.sub.vwhere R1is at least one element selected from Zr and Hf, R2is at least one element selected from rare earth element, M is at least one element selected from C, N and P, T is at least one element selected from Fe and Co, x+y+z+u+v=100, x, y, z, u, v are atomic percent individually defined as 0.1.ltoreq.x.ltoreq.20, 2.ltoreq.y.ltoreq.20, 0.5.ltoreq.z.ltoreq.20, 0.ltoreq.u.ltoreq.20, v.gtoreq.50, and of which principal phase possesses a ThMn.sub.12 crystal structure.
摘要翻译： 公开了抑制Fe，Co或Fe-Co合金的杂质相的形成的磁性材料，其具有稳定的ThMn12晶体结构作为主相，磁性优异，成本低。 这种磁性材料以通式表示：R1xR2ySizMuTv其中R1为选自Zr和Hf中的至少一种元素，R2为选自稀土元素中的至少一种元素，M为选自C，N和P中的至少一种元素，T为 选自Fe和Co中的至少一种元素，x + y + z + u + v = 100，x，y，z，u，v是原子百分数，各自定义为0.1≤x≤20,2/ = y / = 50，其主相具有ThMn12晶体结构。
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公开(公告)号：US5593517A
公开(公告)日：1997-01-14
申请号：US305916
申请日：1994-09-15
申请人： Akiko Saito , Masashi Sahashi , Yoichi Tokai , Akihiko Tsutai , Masami Okamura , Yukiko Nishiyama , Michihiko Inaba
发明人： Akiko Saito , Masashi Sahashi , Yoichi Tokai , Akihiko Tsutai , Masami Okamura , Yukiko Nishiyama , Michihiko Inaba
CPC分类号： B82Y25/00 , F25B9/14 , H01F1/015 , F25B2309/003
摘要： The regenerating material according to the present invention comprises two alloy phases which differ in a content of rare earth elements. Of these alloy phases, a dominant phase in the regenerating material is defined as a main phase, and the other phase is defined as a sub-phase. A plurality of particles, each of which consists of a granular main phase and a sub-phase present on the surface of the main phase, gathers to form an aggregate. Otherwise, a sub-phase present in a main phase in the form of fiber. The refrigerator according to the present invention comprises a regenerator charged with above-mentioned regenerating material, a coolant gas and an expansion means for expanding the coolant gas.
摘要翻译： 根据本发明的再生材料包括稀土元素含量不同的两个合金相。 在这些合金相中，再生材料中的主相被定义为主相，另一相被定义为子相。 多个颗粒，每个颗粒由存在于主相表面上的颗粒状主相和亚相组成，聚集形成聚集体。 否则，以纤维形式存在于主相中的子阶段。 根据本发明的冰箱包括装有上述再生材料的再生器，冷却剂气体和用于膨胀冷却剂气体的膨胀装置。
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公开(公告)号：US20050000230A1
公开(公告)日：2005-01-06
申请号：US10718518
申请日：2003-11-24
申请人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
发明人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
摘要： The magnetic material for magnetic refrigeration of the present invention is characterized by exhibiting, in a certain temperature region, preferably, only in part of a temperature region from 200 K to 350 K, an inflection point at which a second order differential coefficient of a magnetization curve changes from positive to negative with respect to a magnetic field, within the range of this magnetic field formed using a permanent magnet unit. This magnetic material of the present invention can generate a low temperature by using a relatively low magnetic field, by transferring the entropy between the electron spin system and the lattice system near the temperature at which an inflection point appears on the magnetization curve. Examples of the magnetic material meeting this condition are La(Fe,Si)13, (Hf,Ta)Fe2, (Ti,Sc)Fe2, and (Nb,Mo)Fe2, each containing 50 to 60 atomic % of transition metals such as Fe.
摘要翻译： 本发明的磁性制冷用磁性材料的特征在于，在一定的温度范围内优选仅显示200K〜350K的温度区域的一部分，其中磁化强度的二阶微分系数 在使用永久磁铁单元形成的该磁场的范围内，曲线相对于磁场从正向变化为负。 本发明的这种磁性材料可以通过在电磁自旋系统和晶格系统之间传递熵在靠近磁化曲线上出现拐点的温度下，通过使用较低的磁场而产生低温。 满足该条件的磁性材料的实例是La（Fe，Si）13，（Hf，Ta）Fe 2，（Ti，Sc）Fe 2和（Nb，Mo）Fe 2，每个含有50至60原子％的过渡金属 如Fe。
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公开(公告)号：US06676772B2
公开(公告)日：2004-01-13
申请号：US10098568
申请日：2002-03-18
申请人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
发明人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
IPC分类号： H01F1055
摘要： The magnetic material for magnetic refrigeration of the present invention is characterized by exhibiting, in a certain temperature region, preferably, only in part of a temperature region from 200 K to 350 K, an inflection point at which a second order differential coefficient of a magnetization curve changes from positive to negative with respect to a magnetic field, within the range of this magnetic field formed using a permanent magnet unit. This magnetic material of the present invention can generate a low temperature by using a relatively low magnetic field, by transferring the entropy between the electron spin system and the lattice system near the temperature at which an inflection point appears on the magnetization curve. Examples of the magnetic material meeting this condition are La(Fe,Si)13, (Hf,Ta)Fe2, (Ti,Sc)Fe2, and (Nb,Mo)Fe2, each containing 50 to 60 atomic % of transition metals such as Fe.
摘要翻译： 本发明的磁性制冷用磁性材料的特征在于，在一定的温度范围内优选仅显示200K〜350K的温度区域的一部分，其中磁化强度的二阶微分系数 在使用永久磁铁单元形成的该磁场的范围内，曲线相对于磁场从正向变化为负。 本发明的这种磁性材料可以通过在电磁自旋系统和晶格系统之间传递熵在靠近磁化曲线上出现拐点的温度下，通过使用较低的磁场而产生低温。 满足该条件的磁性材料的实例是La（Fe，Si）13，（Hf，Ta）Fe 2，（Ti，Sc）Fe 2和（Nb，Mo）Fe 2，每个含有50至60原子％的过渡金属 如Fe。
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公开(公告)号：US07076958B2
公开(公告)日：2006-07-18
申请号：US10718518
申请日：2003-11-24
申请人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
发明人： Akiko Saito , Tadahiko Kobayashi , Takao Sawa , Masashi Sahashi
摘要： The magnetic material for magnetic refrigeration of the present invention is characterized by exhibiting, in a certain temperature region, preferably, only in part of a temperature region from 200 K to 350 K, an inflection point at which a second order differential coefficient of a magnetization curve changes from positive to negative with respect to a magnetic field, within the range of this magnetic field formed using a permanent magnet unit. This magnetic material of the present invention can generate a low temperature by using a relatively low magnetic field, by transferring the entropy between the electron spin system and the lattice system near the temperature at which an inflection point appears on the magnetization curve. Examples of the magnetic material meeting this condition are La(Fe,Si)13, (Hf,Ta)Fe2, (Ti,Sc)Fe2, and (Nb,Mo)Fe2, each containing 50 to 60 atomic % of transition metals such as Fe.
摘要翻译： 本发明的磁性制冷用磁性材料的特征在于，在一定的温度范围内优选仅显示200K〜350K的温度区域的一部分，其中磁化强度的二阶微分系数 在使用永久磁铁单元形成的该磁场的范围内，曲线相对于磁场从正向变化为负。 本发明的这种磁性材料可以通过在电磁自旋系统和晶格系统之间传递熵在靠近磁化曲线上出现拐点的温度下，通过使用较低的磁场而产生低温。 满足该条件的磁性材料的实例是La（Fe，Si）13，（Hf，Ta）Fe 2 N，（Ti，Sc）Fe 2 /（Nb，Mo）Fe 2 N 2，各自含有50〜60原子％的过渡金属如Fe。
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公开(公告)号：US4975213A
公开(公告)日：1990-12-04
申请号：US294124
申请日：1989-01-06
CPC分类号： H01F1/0578 , C22C1/0441
摘要： In a method for producing a resin-bonded rare earth-iron-boron magnet, a powder is subjected to a heat-treatment below its melting point. The powder can be either: (1) a mixture of both: (a) a powder of a rare earth-iron-boron magnetic alloy comprising about 8 to about 30 atomic percent of R, which stands for at least one selected from the group of Y (yttrium) and rare earth elements, about 2 to about 28 atomic precent of B(boron), and at least 50 atomic percent of Fe(iron) and (b) at least one of the group consisting of R, R-oxides, which are oxides of R, and R-compound, which are the compounds consisting essentially of more than 30 atomic percent of R and the balance substantially of at least one of Fe and Co; or (2) a rare earth-iron-boron magnetic alloy comprising about 8 to about 30 atomic percent of R, about 2 to about 28 atomic percent of B, about 0.1 to about 13 atomic percent of Ga, and at least 50 atomic percent of Fe. The resultant heat-treatment powder is then bonded with a resin. The present invention also includes a magnet such as might be made by such a method.
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公开(公告)号：US6052262A
公开(公告)日：2000-04-18
申请号：US38848
申请日：1998-03-12
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3967 , H01L43/08 , G11B2005/3996 , G11B5/012
摘要： A magneto-resistance effect element comprising a spin valve film including a first magnetic layer, a second magnetic layer and a non-magnetic layer interposed between the first magnetic layer and the second magnetic layer. Among the first and the second magnetic layers, in at least one of the magnetic layers, close-packed faces of crystal grains which constitute the magnetic layer are isotropically dispersed. Such a magnetic layer, by setting a film thickness of an under layer having an identical crystal structure with the magnetic layer at 2.0 nm or less and by dispersing isotropically close-packed faces of crystal grains constituting the under layer, can be obtained with reproducibility. According to a magneto-resistance effect element comprising such a spin valve film, while maintaining a large MR change rate, for example, magnetostriction constant can satisfy such a low magnetostriction as 1.times.10.sup.-6 or less. Further, excellent soft magnetic property can be provided.
摘要翻译： 一种磁电阻效应元件，包括自旋阀膜，该自旋阀膜包括介于第一磁性层和第二磁性层之间的第一磁性层，第二磁性层和非磁性层。 在第一和第二磁性层中，在至少一个磁性层中，构成磁性层的晶粒的紧密堆积面各向同性地分散。 通过将具有与磁性层相同的晶体结构的下层的膜厚设定为2.0nm以下，通过使构成下层的晶粒的各向同性紧密堆积面分散，可以得到这样的磁性层。 根据包含这种自旋阀膜的磁阻效应元件，在保持大的MR变化率的同时，例如，磁致伸缩常数可满足1×10 -6以下的低磁致伸缩性。 此外，可以提供优异的软磁性。
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