Abstract: The object of the present invention is to provide a rare earth magnet which enables to achieve a good balance between high coercive force and high residual magnetic flux density, and its manufacturing method. The present invention provides a rare earth magnet in which a layered grain boundary phase is formed on a surface or a potion of a grain boundary of Nd2Fe14B which is a main phase of an R—Fe—B (R is a rare-earth element) based magnet, and wherein the grain boundary phase contains a fluoride compound, and wherein a thickness of the fluoride compound is 10 ?m or less, or a thickness of the fluoride compound is from 0.1 ?m to 10 ?m, and wherein the coverage of the fluoride compound over a main phase particle is 50% or more on average.

Abstract: The present invention is concerned with an electromagnetic insulation wire, a method of manufacturing the same and an apparatus for manufacturing the same. The wire comprises a conductor and an electromagnetic insulation coat containing magnetic powder dispersed in a resin matrix. The particles of the powder are oriented in the coat in the circumferential direction of the conductor. The particles are oriented in the magnetic field, while the conductor and the composite material are passed through a die heated to a certain temperature.

Abstract: A magnetic material is including magnetic particles including a rare earth element, wherein a fluorine compound including an alkaline earth element or a rare earth element is formed on a surface of the magnetic particles, an oxygen concentration of the fluorine compound is higher than an oxygen concentration of the magnetic particle and the fluorine compound includes at least one type of element selected from the group consisting of the Li, Mg, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Zn, Al, Ga, Sr, Y, Zr, Nb, Ag, In, Sn, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Pb, and Bi elements.

Abstract: A magnet, wherein a surface of each of magnetic particles constituting the magnet is covered by a film with two or more types of fluoride are main components, wherein the main components of the film are fluoride including an element selected from the group consisting of Mg, La, Ce, Pr and Nd and fluoride including an element selected from the group consisting of Ca, Sr, Ba, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu.

Abstract: The object of the present invention is to provide a rare earth magnet which enables to achieve a good balance between high coercive force and high residual magnetic flux density, and its manufacturing method. The present invention provides a rare earth magnet in which a layered grain boundary phase is formed on a surface or a potion of a grain boundary of Nd2Fe14B which is a main phase of an R—Fe—B (R is a rare-earth element) based magnet, and wherein the grain boundary phase contains a fluoride compound, and wherein a thickness of the fluoride compound is 10 ?m or less, or a thickness of the fluoride compound is from 0.1 ?m to 10 ?m, and wherein the coverage of the fluoride compound over a main phase particle is 50% or more on average.

Abstract: A method of manufacturing an integrated thin film head comprises, in order to prevent short-circuit among the lead layer, upper lead layer and shield layers, a lower shield layer formed on a substrate, a lower readgap layer formed on the lower shield layer, an MR sensor layer formed on the lower readgap layer, a lead layer jointed with the MR sensor layer, an upper lead layer formed in contact with a part of the lead layer, an upper readgap layer formed to cover the MR sensor layer, lead layer and upper lead layer and an upper shield layer formed on the upper readgap layer. The part of the lead layer in contact with the upper lead layer is formed thinner than the part not contact with the upper lead layer.

Abstract: It is desired to design a coreless motor in which a gap size is set to be as small as possible, and a magnet having a large energy product is used in order to increase the gap magnetic flux density since the coreless motor has no iron core so that the magnetic flux density is small in the gap part. A rotor core of the motor has a permanent magnet rotor which is formed by a compression molding means, and which is formed of a compact formed by molding a powder material, the compact comprising a bond magnetic portion mainly composed of a binder and a magnetic powder, and a soft magnetic portion mainly composed of a binder and a soft magnetic powder, the bond magnetic portion having magnetic poles having at least one surface which is mechanically bonded to the soft magnetic portion, in order to solve the inherent problems.

Abstract: 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 material are magnetically coupled. A volume ratio of the anti-ferromagnetic material is 20% or less, based on the permanent magnet.

Abstract: A fluoride coating composition forms a coating of a rare earth fluoride and/or an alkaline earth metal fluoride on a surface of an article to be coated. The composition contains the rare earth fluoride and/or alkaline earth metal fluoride, and a medium mainly containing at least one alcohol. In the composition, the rare earth fluoride and/or alkaline earth metal fluoride is swollen by the medium, is gelatinous, and is dispersed in the medium.

Abstract: A permanent magnet type electric rotating machine having a high resistance permanent magnet used for the electric rotating machine, the permanent magnet containing a magnetic powder and a fluorine compound, in which the current waveform is controlled for reducing the loss to satisfy a relation: A<C<B and restrict the 7th higher-harmonic component to 20% or less where A is the content for the 5th higher harmonic component, B is the content for the 7th higher harmonic component, and C is the content for the 11th higher harmonic component, assuming the total of contents for the fundamental components of a current supplied to the findings being 100%.

Abstract: 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 material are magnetically coupled. A volume ratio of the anti-ferromagnetic material is 20% or less, based on the permanent magnet.

Abstract: In a ferromagnetic material containing at least one kind of rare-earth element, a layer containing at least one kind of alkaline earth element or rare-earth element and fluorine is formed at the grain boundary or near the powder surface of the ferromagnetic material. A further layer containing at least one kind of rare-earth element, having a fluorine concentration lower than that of the layer described first and having a rare-earth element concentration higher than that of the host phase of the ferromagnetic material, or an oxide layer containing a rare-earth element is formed in adjacent with a portion of the layer described first.

Abstract: The object of the present invention is to provide a rare earth magnet which enables to achieve a good balance between high coercive force and high residual magnetic flux density, and its manufacturing method. The present invention provides a rare earth magnet in which a layered grain boundary phase is formed on a surface or a potion of a grain boundary of Nd2Fe14B which is a main phase of an R—Fe—B (R is a rare-earth element) based magnet, and wherein the grain boundary phase contains a fluoride compound, and wherein a thickness of the fluoride compound is 10 ?m or less, or a thickness of the fluoride compound is from 0.1 ?m to 10 ?m, and wherein the coverage of the fluoride compound over a main phase particle is 50% or more on average.

Abstract: An integrated thin film head comprises, in order to prevent short-circuit among the lead layer, upper lead layer and shield layers, a lower shield layer formed on a substrate, a lower readgap layer formed on the lower shield layer, an MR sensor layer formed on the lower readgap layer, a lead layer jointed with the MR sensor layer, an upper lead layer formed in contact with a part of the lead layer, an upper readgap layer formed to cover the MR sensor layer, lead layer and upper lead layer and an upper shield layer formed on the upper readgap layer. The part of the lead layer in contact with the upper lead layer is formed thinner than the part not contact with the upper lead layer.

Abstract: A rotor has magnets segmented in a circumferential direction of a periphery of a shaft, wherein magnetizing directions of the segmented magnets continuously vary, and a non-magnetic material or a ferromagnetic material is interposed in a circumferential gap between the segmented magnets. Further, a method of manufacturing a rotor comprises steps of arranging coils so that a longitudinal direction of each of the coils is along an axis of the shaft and magnetizing the segmented magnets. Still further, a rotary machine uses the rotor.

Abstract: An integrated thin film head comprises, in order to prevent short-circuit among the lead layer, upper lead layer and shield layers, a lower shield layer formed on a substrate, a lower readgap layer formed on the lower shield layer, an MR sensor layer formed on the lower readgap layer, a lead layer jointed with the MR sensor layer, an upper lead layer formed in contact with a part of the lead layer, an upper readgap layer formed to cover the MR sensor layer, lead layer and upper lead layer and an upper shield layer formed on the upper readgap layer. The part of the lead layer in contact with the upper lead layer is formed thinner than the part not contact with the upper lead layer.

Abstract: The present invention is concerned with an electromagnetic insulation wire, a method of manufacturing the same and an apparatus for manufacturing the same. The wire comprises a conductor and an electromagnetic insulation coat containing magnetic powder dispersed in a resin matrix. The particles of the powder are oriented in the coat in the circumferential direction of the conductor. The particles are oriented in the magnetic field, while the conductor and the composite material are passed through a die heated to a certain temperature.

Abstract: 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 material are magnetically coupled. A volume ratio of the anti-ferromagnetic material is 20% or less, based on the permanent magnet.

Abstract: The present invention provides a ring magnet made of hard magnetic material having a ring shape, which has an orientation ratio of 50% by volume or more of easy magnetization axis in the radial direction at the pole center position. The present invention also provides a method of manufacturing a ring magnet comprising a step of orientating magnetic powder of hard magnetic material, which comprises molding the magnetic powder filled in a ring shaped mold under a pressure in an axial direction of the ring, and applying magnetic field to the ring shaped mold with a magnetic field generating means disposed to the periphery of the mold.

Abstract: A magnetic sensor utilizing a spin tunnel magneto-resistance effect (TMR), comprising a tunnel insulating film, a first magnetic layer formed on one of the planes of the tunnel insulating film, a second magnetic layer formed on the other plane of the tunnel insulating film, a third magnetic layer containing an anti-ferromagnetic substance for fixing magnetization of the second magnetic layer, a second insulating film formed on at least one of the first and third magnetic layers and having an opening in a predetermined region, a first electrode electrically connected to one of the first and third magnetic layers only in the opening of the second insulating film, and a second electrode for causing a current to flow between the first electrode and itself through at least the first and second magnetic layers and the first insulating layer.