Abstract: An improved method for forming a self-assembled monolayer on a substrate is disclosed. The method comprises plasma treatment of the substrate prior to formation of the self-assembled monolayer.

Abstract: The present disclosure is directed to a method of shaping a starting material of polycrystalline Fe—Ga alloy sheet of varying texture or crystal orientation. The method includes texturing the surface of the Fe—Ga alloy sheet to re-orient polycrystalline Fe—Ga crystals of the polycrystalline Fe—Ga alloy sheet to increase the uniformity of the crystal orientation of the Fe—Ga alloy sheet. The texturing step includes: initially deforming the Fe—Ga alloy sheet by hot rolling; subsequently deforming the previously hot rolled Fe—Ga alloy sheet by warm rolling; and annealing the previously warm rolled Fe—Ga alloy sheet. The method provides an alloy having a saturation magnetostriction potential greater than 60 ppm in applied fields of between 200-600 Oersted. During the annealing step H2S gas is added to introduce sulfur for promoting surface-energy-induced selective growth of {110} grain. The annealing step is performed in an atmosphere of argon gas.

Abstract: The present invention discloses a composite magnetic material. The composite magnetic material may comprise an Nd—Fe—B alloy and a Fe-based soft magnetic alloy having the general formula of Fe100-x-y-z-aAxRaSiyBz. A may be at least one element selected from Cu and Au. R may be at least one element selected from the group consisting of Ti, Zr, Hf, Mo, Nb, Ta, W and V. And the x, a, y, and z may satisfy: 0?x?3, 0?a?10, 0?y?20 and 2?z?25. The present invention further discloses a method of preparing the composite magnetic material as described above. According to the present invention, the composite magnetic material may have an enhanced magnetic energy product and residual magnetism respectively.

Abstract: According to one embodiment, a permanent magnet is provided with a sintered body having a composition represented by R(FepMqCurCo1-p-q-r)zOw (where, R is at least one element selected from rare-earth elements, M is at least one element selected from Ti, Zr and Hf, and p, q, r, z and w are numbers satisfying 0.25?p?0.6, 0.005?q?0.1, 0.01?r?0.1, 4?z?9 and 0.005?w?0.6 in terms of atomic ratio). The sintered body has therein aggregates of oxides containing the element R dispersed substantially uniformly.

Abstract: A method for manufacturing a sintered rare-earth magnet having a magnetic anisotropy, in which a very active powder having a small grain size can be safely used in a low-oxidized state. A fine powder as a material of the sintered rare-earth magnet having a magnetic anisotropy is loaded into a mold until its density reaches a predetermined level. Then, in a magnetic orientation section, the fine powder is oriented by a pulsed magnetic field. Subsequently, the fine powder is not compressed but immediately sintered in a sintering furnace. A multi-cavity mold for manufacturing a sintered rare-earth magnet having an industrially important shape, such as a plate magnet or an arched plate magnet, may be used.

Abstract: There are provided a permanent magnet and a manufacturing method thereof capable of manufacturing metal alkoxide in better work environment, simpler production facilities and easier manufacturing process and also reducing the manufacturing costs. An electrolytic solution is obtained through dissolving chloride or injecting hydrogen chloride gas into alcohol which is same alcohol as is a constituent element of metal alkoxide to be manufactured. Then, electrolysis is performed on the electrolytic solution while using, for an anode, a ferroalloy that contains iron and metal which is a constituent element of the metal alkoxide to be manufactured in a predetermined weight ratio (such as 1:1), and, for a cathode, the same ferroalloy, carbon, platinum or stainless steel, so as to obtain an alcohol solution of the metal alkoxide. Then, a permanent magnet is manufactured using the alcohol solution of the metal alkoxide thus obtained.

Abstract: There are provided a permanent magnet and a manufacturing method thereof capable of densely sintering the entirety of the magnet without making a gap between a main phase and a grain boundary phase in the sintered magnet. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR)x (M represents V, Mo, Zr, Ta, Ti, W or Nb, R represents a substituent group consisting of a straight-chain or branched-chain hydrocarbon, x represents an arbitrary integer) so as to uniformly adhere the organometallic compound to particle surfaces of the neodymium magnet powder. Thereafter, desiccated magnet powder is held for several hours in hydrogen atmosphere at 200 through 900 degrees Celsius. Thereafter, the powdery calcined body calcined through the calcination process in hydrogen is held for several hours in vacuum atmosphere at 200 through 600 degrees Celsius for a dehydrogenation process.

Abstract: The present invention relates to a permanent magnet manufactured by steps of: pulverizing a magnet raw material into fine particles having a grain size of 3 ?m or less; mixing the pulverized magnet raw material with a rust preventive oil in which a high-melting metal element-containing organic compound or a precursor of a high-melting ceramic is dissolved, thereby preparing a slurry; compression molding the slurry to form a molded body; and sintering the molded body.

Abstract: There are provided a permanent magnet and a manufacturing method thereof capable of densely sintering the entirety of the magnet without making a gap between a main phase and a grain boundary phase in the sintered magnet. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR)X (M represents V, Mo, Zr, Ta, Ti, W or Nb, R represents a substituent group consisting of a straight-chain or branched-chain hydrocarbon, X represents an arbitrary integer) so as to uniformly adhere the organometallic compound to particle surfaces of the neodymium magnet powder. Thereafter, a compact body formed through powder compaction is held for several hours in hydrogen atmosphere at 200 through 900 degrees Celsius. Thereafter, through sintering process, a permanent magnet is manufactured.

Abstract: There are provided a permanent magnet and a manufacturing method thereof that enables concentration of V, Mo, Zr, Ta, Ti, W or Nb contained in an organometallic compound in grain boundaries of the permanent magnet. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR)x (M represents V, Mo, Zr, Ta, Ti, W or Nb, R represents a substituent group consisting of a straight-chain or branched-chain hydrocarbon, x represents an arbitrary integer) so as to uniformly adhere the organometallic compound to particle surfaces of the neodymium magnet powder. Thereafter, a compact body obtained by compacting the magnet powder is held for several hours in hydrogen atmosphere at 200 through 900 degrees Celsius so as to perform a calcination process in hydrogen. Thereafter, through sintering, a permanent magnet is manufactured.

Abstract: A magnetic material includes a main alloy having a rhombohedral crystal structure and a composition represented by CoyCuxPtz, wherein x ranges from 3 to 32, y ranges from 18 to 47, and z ranges from 40 to 60, with the proviso that x+y+z=100. The rhombohedral crystal structure of the main alloy includes a magnetic Co—Pt alloy region and a nonmagnetic Cu—Pt alloy region.

Abstract: An alloy composition of FeaBbSicPxCyCuz. Parameters meet the following conditions: 79?a?86 atomic %; 5?b?13 atomic %; 0?c?8 atomic %; 1?x?8 atomic %; 0?y?5 atomic %, 0.4?z?1.4 atomic %; and 0.08?z/x?0.8. Or, parameters meet the following conditions: 81?a?86 atomic %; 6?b?10 atomic %; 2?c?8 atomic %; 2?x?5 atomic %; 0?y?4 atomic %; 0.4?z?1.4 atomic %, and 0.08?z/x?0.8.

Abstract: There are provided a permanent magnet and a manufacturing method thereof capable of preventing degrade in the magnetic properties by densely sintering the entirety of the magnet. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR)X (M represents Dy or Tb, R represents a substituent group consisting of a straight-chain or branched-chain hydrocarbon, X represents an arbitrary integer) so as to uniformly adhere the organometallic compound to particle surfaces of the neodymium magnet powder. Thereafter, the desiccated magnet powder is calcined by utilizing plasma heating and the powdery calcined body is sintered so as to form a permanent magnet 1.

Abstract: There are provided a permanent magnet and a manufacturing method thereof capable of preventing grain growth in a main phase and enabling rare-earth rich phase to be uniformly dispersed. To fine powder of milled neodymium magnet material is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR)x (in the formula, M represents Cu or Al, R represents a substituent group consisting of a straight-chain or branched-chain hydrocarbon, x represents an arbitrary integer) so as to uniformly adhere the organometallic compound to particle surfaces of the neodymium magnet powder. Thereafter, a compact body formed by compacting the above neodymium magnet powder is held for several hours in hydrogen atmosphere at 200 through 900 degrees Celsius. Thereafter, through a sintering process, a permanent magnet is manufactured.

Abstract: The present invention relates to new intermetallic compounds having a crystalline structure of Ni3Sn2 type for the magnetic refrigeration, their use and a process for preparing the same. The present invention further relates to new magnetocaloric compositions for the magnetic refrigeration and their use.