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7399368 Motor using magnet  
A permanent magnet comprises a hard magnetic material that contains at least a rare earth element and an anti-ferromagnetic material, wherein the hard magnetic material and the anti-ferromagnetic...
7396419 Method for preparing sintered product, sintered product and magnetostriction material  
A method for manufacturing a sintered compact includes the steps of preparing an alloy powder having a composition represented by Expression 1: RT W (where, R is at least one kind of rare earth...
7390369 Method for producing rare earth based alloy powder and method for producing rare earth based sintered magnet  
An inventive method of making a rare-earth alloy powder is used to produce a rare-earth sintered magnet, whose main phase has a composition R 2 T 14 A (where R is one of the rare-earth elements...
7384487 Method for producing magnetostrictive element and container for sintering  
It is an object of the present invention to provide a method for producing a magnetostrictive element, capable of assuredly producing a magnetostrictive element by powder metallurgy. In a container...
7371292 Nd-Fe-B type anisotropic exchange spring magnet and method of producing the same  
A Nd—Fe—B type anisotropic exchange spring magnet is produced by a method of obtaining powder of a Nd—Fe—B type rare earth magnet alloy which comprises hard magnetic phases and soft...
7371290 Production method for permanent magnet and press device  
To avoid various problems caused by remnant magnetization and produce an anisotropic bonded magnet at a reduced cost, a method for producing an anisotropic bonded magnet by feeding a magnetic...
7364628 Solid material for magnet  
A solid material for a magnet, comprising a rare-earth/iron/nitrogen/hydrogen system magnetic material.
7344653 Method for producing and magnetising a bitumen film containing magnetic powder  
A bitumen film containing magnetic powder is heated prior to magnetization to a temperature enabling the magnetic powder particles to be oriented according to the effect of the magnetic field. The...
7344606 Permanent magnet manufacturing method and press apparatus  
An anisotropic bonded magnet is produced at a low cost by avoiding various problems caused by remanence. Also, the unit weight and density of a compact is increased by filling even a cavity, having...
7344605 Exchange spring magnet powder and a method of producing the same  
An anisotropic exchange spring magnet powder complexing a hard magnetic material and a soft magnetic material, wherein a rare earth metal element, a transition metal element, boron and carbon and...
7338566 Alloy for sm-co based magnet, method for production thereof, sintered magnet and bonded magnet  
The present invention relates to a Sm—Co based magnet alloy useful as a raw material for producing magnets having high magnetic properties, such as sintered or bonded magnets, methods for...
7320169 Self-pinned GMR structure by annealing  
In a conventional spin valve the shunt resistance of the pinning layer reduces the overall efficiency of the device. This problem has been overcome by using IrMn for the pinning layer at a...
7314530 Press and magnet manufacturing method  
A press machine 10 includes a die 12 with a through hole 12 a that defines a cavity, a first press surface 14 a and a second press surface 16 a for pressing a magnetic powder 18 loaded...
7302867 Magnetic transducer torque measurement  
A magnetic transducer element is formed by rotating an integral region of a shaft about an axis in the presence of a magnetic source. An annulus of magnetization results in having its magnetization...
7255752 Method for manufacturing R-T-B system rare earth permanent magnet  
A method for manufacturing an R-T-B system rare earth permanent magnet that is a sintered body comprising a main phase consisting of an R 2 T 14 B phase (wherein R represents one or more rare earth...
7255751 Method for manufacturing R-T-B system rare earth permanent magnet  
When an R-T-B system rare earth permanent magnet is obtained by a mixing method to obtain a sintered body with a composition consisting essentially of 25% to 35% by weight of R (wherein R...
7244318 Method for preparation of permanent magnet  
A blended powder including a first powder containing an R 2 T 14 B phase as a main phase, and a second powder containing an R 2 T 17 phase at 25 wt % or more of the whole is prepared. Herein, R is...
7232495 Method of magnetizing rare-earth magnet and rare-earth magnet  
The method of the present invention includes a step of preparing a rare earth magnet 22 disposed for forming a cylinder 22 a , a first magnetizing step of applying a first external magnetic...
7211157 Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing  
A rare-earth alloy ingot is produced by melting an alloy composed of 20–30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other...
7207102 Method for forming permanent magnets with different polarities for use in microelectromechanical devices  
Methods are provided for forming a plurality of permanent magnets with two different north-south magnetic pole alignments for use in microelectromechanical (MEM) devices. These methods are based on...
7204891 Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet  
Rare earth magnet scrap and/or sludge is remelted for reuse. Once a rare earth-free magnet-constituent metal feed is loaded in a melting furnace and heated into a melt, a rare earth-containing...
7201809 Radial anisotropic ring magnet and method of manufacturing the ring magnet  
A radially anisotropic ring magnet endowed with good magnetic characteristics and having throughout the magnet an angle of 80 to 100° between a center axis thereof and a radial anisotropy...
7166171 Longitudinal magnetic field compacting method and device for manufacturing rare earth magnets  
Disclosed is a longitudinal magnetic field compacting method and device for manufacturing a neodymium (Nd) based rare earth magnet in the shape of a butterfly for use in VCM of HDD or DVD, a disk...
7063752 Grain refinement of alloys using magnetic field processing  
A method for refining the grain size of alloys which undergo ferromagnetic to paramagnetic phase transformation and an alloy produced therefrom. By subjecting the alloy to a timed application of a...
7056393 Method of making sintered compact for rare earth magnet  
A method of making a sintered body for a rare earth magnet includes the steps of (a) preparing a first coarse powder by coarsely pulverizing a rare earth alloy sintered body by a hydrogen...
7037465 Powder compacting method, powder compacting apparatus and method for producing rare earth magnet  
A powder compacting method includes the steps of: providing a powder material; loading the powder material into a cavity; uniaxially pressing the powder material, which has been loaded into the...
7014811 Method for producing rare earth sintered magnets  
A method for producing rare earth sintered magnets includes the steps of pressing and compacting an alloy powder for the rare earth sintered magnets, thereby preparing a plurality of green...
7004228 Process for producing, through strip casting, raw alloy for nanocomposite type permanent magnet  
To make a raw alloy, consisting mostly of amorphous structure, highly productively and at a reduced cost for a nanocomposite magnet, a molten alloy represented by Fe 100-x-y-z R x Q y M z (where R...
6991686 Method for producing magnetostrictive material  
To provide a method for producing a magnetostrictive material of excellent magnetostrictive characteristics. The method for producing a magnetostrictive material, wherein a mixture composed of...
6984271 Rare earth magnet, process for producing same, and motor using rare earth magnet  
A rare earth magnet to be used in a motor. The rare earth magnet comprises rare earth magnet particles. Additionally, a rare earth oxide is present among the rare earth magnet particles, the rare...
6984270 Radial anisotropic sintered magnet and its production method, magnet rotor using sintered magnet, and motor using magnet rotor  
A radial anisotropic sintered magnet formed into a cylindrical shape includes a portion oriented in directions tilted at an angle of 30° or more from radial directions, the portion being contained...
6982010 High performance rare earth-iron giant magnetostrictive materials and method for its preparation  
The present invention relates to a high performance rare earth-iron giant magnetostrictive material of the formula (Tb x1 Dy x2 Sm x3 Ho x4 R x5 )(S y1 P y2 Fe 1-y1-y2-y3 T y3 ) Q obtained by...
6863742 Bulk anisotropic rare earth permanent magnet and preparation method  
A bulk anisotropic rare earth permanent magnet consists essentially of R, Fe or Fe and Co, and N, wherein R is selected from rare earth elements inclusive of Y and contains Sm as a main component,...
6764607 Corrosion-resistant R-Fe-B bonded magnet powder for forming R-Fe-B bonded magnet and method for preparation thereof  
A powder for forming a R—Fe—B bonded magnet, wherein an R compound, such as an R oxide, an R carbide, an R nitride or an R hydride, which is contained in a raw material powder such as a super...
6746545 Preparation of rare earth permanent magnets  
An R—Fe—B permanent magnet wherein R is Nd or a combination of Nd with a rare earth element is prepared by casting an R—Fe—B alloy, crushing the alloy in an oxygen-free atmosphere of argon,...
6741440 Mechanically pulsed magnetization kit  
A magnetization method and apparatus is described as utilizing a pair of mechanically counter-vibrated permanent magnets having mutually facing unlike magnetic poles, and wherein a ferromagnetic...
6669788 Permanent magnetic materials of the Fe-B-R tpe, containing Ce and Nd and/or Pr, and process for manufacture  
A Fe—B—R type permanent magnetic, consisting of: 13-19 atomic % R, where R consists essentially of a mixture of rare earth elements Nd and/or Pr, and Ce, where Ce is between 0.2 and 5.0 wt. %...
6653548 Thermoelectric conversion material, method for manufacturing same, and thermoelectric conversion element  
A cuboid p-type and an n-type thermoelectric conversion material having a composite of an alloy powder for a rare earth magnet and a bismuth-based thermoelectric conversion material that has been...
6602352 Method for manufacturing rare earth magnet and powder compacting apparatus  
A method and apparatus for manufacturing a rare earth magnet is disclosed. In a first step, a compact is produced by compacting rare earth alloy powder in a predetermined space in an orienting...
6594124 Canted adjacent layer stabilized SV heads  
An improved stabilization scheme for a GMR read head is described. Two important changes relative to prior art designs have been introduced. Instead of biasing by means of a permanent magnet or...
6589366 Method of making active magnetic refrigerant, colossal magnetostriction and giant magnetoresistive materials based on Gd-Si-Ge alloys  
Method of making an active magnetic refrigerant represented by Gd 5 (Si x Ge 1−x ) 4 alloy for 0≦x≦1.0 comprising placing amounts of the commercially pure Gd, Si, and Ge charge components in...
6375759 Batch fabrication of precision miniature permanent magnets  
A new class of processes for fabrication of precision miniature rare earth permanent magnets is disclosed. Such magnets typically have sizes in the range 0.1 to 10 millimeters, and dimensional...
6368551 Method for preparation of sintered permanent magnet  
The method for preparation of sintered permanent magnets according to the present invention comprises the steps of: mixing fully fine powder of a crystalline mother alloy for permanent magnet...
6361738 Method of producing R-Fe-B permanent magnet, and lubricant agent and release agent for use in shaping the same  
The method of producing an R—Fe—B magnet of the present invention is characterized in that R—Fe—B alloy fine powder is molded in a magnetic field and sintered using a lubricant for molding...
6214288 Method for the preparation of a rare earth permanent magnet  
An improvement is proposed in the powder metallurgical method for the preparation of a rare earth-based permanent magnet comprising the steps of compression-molding a magnet alloy powder into a...
6210495 Method for preparing a rare earth- and transition metal-based magnetically anisotropic material by solidifying a liquid alloy in a guiding field  
Method for obtaining a solid, magnetically anisotropic material, includes the steps of heating an alloy containing a rare earth element and at least one transition metal to a temperature higher...
6187259 Method for preparing rare-earth system sintered magnet  
The object of the present invention is to provide rare-earth system sintered magnets such as R--Fe--B system or R--Co system having excellent magnetic properties, unique configuration of a small...
6162364 Method for manipulation of diamagnetic objects in a low gravity environment  
A method and system for diamagnetic manipulation of an object in a surrounding medium in a low gravity environment is provided. The system can be used in various applications such as containerless...
6159308 Rare earth permanent magnet and production method thereof  
A method of producing an R--Fe--B-based, sintered permanent magnet, wherein R is at least one rare earth element including Y, having a small oxygen content. A coarse alloy powder prepared by a...
6149861 Methods for manufacturing R-Fe-B type magnet raw material powder and R-Fe-B type magnet  
It is an object of the present invention to provide a method for manufacturing a raw material alloy powder that can be utilized effectively in the regeneration of surplus or defective R--Fe--B type...
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