44results about How to "Efficient magnetization" patented technology

A magnetic memory cell, used in a magnetic memory device, includes a stacked magnetic pinned layer, serving as a part of the base structure. The stacked magnetic pinned stacked layer has a top pinned layer and a bottom pinned layer, between which there is a sufficient large magnetic coupling force to maintain magnetization of the top pinned layer on a reference direction. A tunnel barrier layer is disposed on the stacked magnetic pinned layer. A magnetic free stacked layer is disposed on the tunnel barrier layer. The magnetic free stacked layer includes a bottom free layer having a bottom magnetization and a top free layer having a top magnetization. When no assisted magnetic field is applied, the bottom magnetization is anti-parallel to the top magnetization and is perpendicular to the reference direction on the top pinned layer. A magnetic bias layer can be also disposed on the top free layer.

A magnetic tunnel junction stack is provided that includes nonmagnetic spacer layers between the free layer and the polarizer layer formed from magnesium oxide and tantalum nitride materials that balance the spin torques acting on the free layer. The design provided enables a deterministic final state for the storage layer and significantly improves the tunneling magnetoresistance value and switching characteristics of the magnetic tunnel junction for MRAM applications.

A magnetic memory cell, used in a magnetic memory device, includes a stacked magnetic pinned layer, serving as a part of the base structure. The stacked magnetic pinned stacked layer has a top pinned layer and a bottom pinned layer, between which there is a sufficient large magnetic coupling force to maintain magnetization of the top pinned layer on a reference direction. A tunnel barrier layer is disposed on the stacked magnetic pinned layer. A magnetic free stacked layer is disposed on the tunnel barrier layer. The magnetic free stacked layer includes a bottom free layer having a bottom magnetization and a top free layer having a top magnetization. When no assisted magnetic field is applied, the bottom magnetization is anti-parallel to the top magnetization and is perpendicular to the reference direction on the top pinned layer. A magnetic bias layer can be also disposed on the top free layer.

The present invention is directed to a method and system of tissue or background suppression for the acquisition of image data from blood flow or tissue perfusion. Background suppression with minimal effects upon inflowing spins is achieved through a series of spin locking low level RF pulses that cause adiabatic demagnetization of tissue with a relaxation time T1-rho that is intermediate between T1 and T2 relaxation times. In this regard, the effective transverse magnetization of static tissue resulting from the application of a series of low level RF pulses is reduced and, with the spin locking, longitudinal magnetization regrowth is minimized. As such, inflowing spins to an imaging volume may be directly imaged with significant background tissue suppression. The present invention is particularly applicable to time-of-flight MRA and MR perfusion imaging.

The present invention relates to a switch magnetic valve, which is taken as a pre-control valve to generate and control pressure in vehicle pneumatic braking system, wherein the switch magnetic valve comprises a first passage, used for introducing compressed-air into the switch magnetic valve or export compressed-air from the switch magnetic valve; a second passage, used for introducing compressed-air into the switch magnetic valve or export compressed-air from the switch magnetic valve; a valve chamber including a valve seat for selectively release and break off compressed-air stream; and a valve core, provided with an outer housing surface and a hole used let the compressed-air pass through. According to the invention, the valve chamber (32) is provided with a flow path (28); the flow path (28) neighbors with housing surface (70) of the valve core (24); the flow path (28) is formed by at least one gap on housing surface (70) of the valve core (24) in preference.

A magnetic sensor includes eight SAF-type GMR elements. Four of the GMR elements detect a magnetic field in the direction of the X-axis and are bridge-connected to thereby constitute an X-axis magnetic sensor. The other four GMR elements detect a magnetic field in the direction of the Y-axis and are bridge-connected to thereby constitute a Y-axis magnetic sensor. The magnetization of a pinned layer of each of the GMR elements is pinned in a fixed direction by means of a magnetic field that a permanent bar magnet inserted into a square portion of a yoke of a magnet array generates in the vicinity of a rectangular portion of the yoke. A magnetic field generated in the vicinity of a certain rectangular portion of the yoke differs in direction by 90 degrees from a magnetic field generated in the vicinity of a rectangular portion adjacent to the former rectangular portion.

A magnetic sensor includes eight SAF-type GMR elements. Four of the GMR elements detect a magnetic field in the direction of the X-axis and are bridge-connected to thereby constitute an X-axis magnetic sensor. The other four GMR elements detect a magnetic field in the direction of the Y-axis and are bridge-connected to thereby constitute a Y-axis magnetic sensor. The magnetization of a pinned layer of each of the GMR elements is pinned in a fixed direction by means of a magnetic field that a permanent bar magnet inserted into a square portion of a yoke of a magnet array generates in the vicinity of a rectangular portion of the yoke. A magnetic field generated in the vicinity of a certain rectangular portion of the yoke differs in direction by 90 degrees from a magnetic field generated in the vicinity of a rectangular portion adjacent to the former rectangular portion.

Shape dummy cells that are designed to have the same dimensions and structures as MTJ memory cells are additionally provided in the peripheral portion of an MTJ memory cell array in which normal MTJ memory cells for storing data are arranged in a matrix. The MTJ memory cells and the shape dummy cells are sequentially arranged so as to have a uniform pitch throughout the entirety. Accordingly, non-uniformity between MTJ memory cells in the center portion and in border portions of the MTJ memory cell array, respectively, after manufacture due to high and low densities of the surrounding memory cells can be eliminated.

A magnetic storage cell is comprised of two magneto-resistive elements to remove in-phase noise in a read output, and reduces a loss of a current magnetic field, when information is written thereinto, to efficiently produce magnetization reversal. In addition, the area occupied by the magnetic storage cell is reduced to increase the storage capacity, and the structure of the magnetic storage cell is simplified to facilitate the manufacturing. The magnetic storage cell comprises two TMR elements, and an annular magnetic layer provided commonly for the two TMR elements. The TMR elements are disposed in a direction along a laminating surface with respect to each other. A write bit line and a write word line are provided commonly for the two TMR elements. The annular magnetic layer is disposed with its axial direction defined in a direction along the laminating surface, and is passed through by the lines.

An outer rotor motor comprises a rotor rotating about an axis, and a fixed stator. Provided over the inner peripheral surface of a cylindrical part of a fan connecting resin member are a ring-shaped yoke, a ring-shaped rotor magnet fixed to a fixing slot defined in the radially inner surface of the yoke, and yokes fixed to fixing slots defined in a radially inner surface of the rotor magnet. The rotor magnet is so magnetized that magnetic poles alternately change in a circumferential direction. The yoke covers a radially outer surface of the rotor magnet, and parts on a radially outer side of an axially upper surface and an axially lower surface of the rotor magnet.

The present invention provides a magnetic memory device capable of stably performing information writing operation by efficiently using a magnetic field generated by current flowing in write lines and having a high degree of flexibility in designing. A magneto-resistive element has: a magnetic yoke disposed annularly in a circumferential direction so as to surround a write word line and a write bit line, and having a pair of open ends facing each other while sandwiching a gap provided in a part in the circumferential direction; and a stacked body including a second magnetic layer of which magnetization direction changes according to an external magnetic field and a pair of end faces. The stacked body is disposed in the gap so that each of the pair of end faces and each of the pair of open ends face each other. With the configuration, magnetization of the second magnetic layer can be efficiently inverted and, as compared with the case where the stacked body and the magnetic yoke are in contact with each other, the material of the stacked body can be selected from a wider range and the magnetic and electric performances of the stacked body can be sufficiently displayed.

The present invention is directed to a method and system of tissue or background suppression for the acquisition of image data from blood flow or tissue perfusion. Background suppression with minimal effects upon inflowing spins is achieved through a series of spin locking low level RF pulses that cause adiabatic demagnetization of tissue with a relaxation time T1-rho that is intermediate between T1 and T2 relaxation times. In this regard, the effective transverse magnetization of static tissue resulting from the application of a series of low level RF pulses is reduced and, with the spin locking, longitudinal magnetization regrowth is minimized. As such, inflowing spins to an imaging volume may be directly imaged with significant background tissue suppression. The present invention is particularly applicable to time-of-flight MRA and MR perfusion imaging.

The present invention aims to provide a magnetic sensor provided with a magnetoresistive effect element capable of stably maintaining a direction of magnetization in a magnetic domain of a free layer. The magnetic sensor includes a magnetoresistive effect element provided with narrow zonal portions 11a . . . 11a including a pinned layer and a free layer. Disposed below both ends of the free layer are bias magnet films 11b . . . 11b composed of a permanent magnet that applies to the free layer a bias magnetic field in a predetermined direction and an initializing coil 31 that is disposed in the vicinity of the free layer and applies to the free layer a magnetic field having the direction same as that of the bias magnetic field by being energized under a predetermined condition. Further, magnetizing the bias magnet films and fixing the direction of magnetization of the pinned layer are performed by a magnetic field formed by a magnet array configured such that plural permanent magnets are arranged on a lattice point of a tetragonal lattice and a polarity of a magnet pole of each permanent magnet is different from a polarity of the other adjacent magnet pole spaced by the shortest route.

The magnetization method of the permanent magnet type motor related to the present invention includes: the first to the third inductance measurement steps (S201 to S203) of measuring the inductance involved in the combination of the two phases in the three-phase winding; according to the three inductance measurement values ​​( 1st to 3rd inductance measurement values), the step of specifying the relative positional relationship between the rotor and the stator (S205); A step of magnetizing the unmagnetized magnetizable member (S205 to S210). Therefore, even if the internal structure of the compressor cannot be seen, the relative position of the rotor and the stator can be accurately aligned with a small device, and the magnetization method and device of the permanent magnet type motor can be magnetized without magnetization.

Embodiments of the invention improve efficiency in alternating-current demagnetization of a magnetic recording medium. In specific embodiments, magnet fields in a direction slanting to an easy direction of magnetization of recording layer magnetization of a medium in rotation are applied.

The present invention aims to provide a magnetic sensor provided with a magnetoresistive effect element capable of stably maintaining a direction of magnetization in a magnetic domain of a free layer.The magnetic sensor includes a magnetoresistive effect element provided with narrow zonal portions 11a . . . 11a including a pinned layer and a free layer. Disposed below both ends of the free layer are bias magnet films 11b . . . 11b composed of a permanent magnet that applies to the free layer a bias magnetic field in a predetermined direction and an initializing coil 31 that is disposed in the vicinity of the free layer and applies to the free layer a magnetic field having the direction same as that of the bias magnetic field by being energized under a predetermined condition. Further, magnetizing the bias magnet films and fixing the direction of magnetization of the pinned layer are performed by a magnetic field formed by a magnet array configured such that plural permanent magnets are arranged on a lattice point of a tetragonal lattice and a polarity of a magnet pole of each permanent magnet is different from a polarity of the other adjacent magnet pole spaced by the shortest route.

A demagnetization circuit that is used in a push-pull circuit, when the positive-half-period circuit is on and the negative-half-period circuit is off, a pulse width modulation signal (Vga) at MOSFET side of the positive-half-period circuit is inversed (PWB) and then transmitted into negative-half-period demagnetization circuit, which renders the negative-half-period demagnetization circuit conducted and short so that the demagnetization is operated during the positive-half-period; when the negative-half-period circuit is operating, a pulse width modulation signal (Vgb) at MOSFET side of the negative-half-period circuit is inversed (PWB) and then transmitted into positive-half-period demagnetization circuit, and the above circuits are alternatively switched and short for demagnetization so as to prevent the transformer from generating remanent magnetization.

A magnetoresistance effect element has favorable symmetry of an MR ratio even if the sign of a bias voltage is different, which is capable of reversing magnetization to a current, which has a high MR ratio. A magnetoresistance effect element includes a laminate in which an underlayer, a first ferromagnetic metal layer, a tunnel barrier layer, and a second ferromagnetic metal layer are laminated in that order, wherein the underlayer is made of one or more selected from a group containing of TiN, VN, NbN, and TaN, or mixed crystals thereof, and wherein the tunnel barrier layer is made of a compound having a spinel structure and represented by the following composition formula (1). (1): AxGa2Oy where A is a non-magnetic divalent cation and represents a cation of at least one element selected from the group consisting of magnesium, zinc, and cadmium, x is a number that satisfies 0<x≦2, and y is a number that satisfies 0<y≦4.

The invention provides a magnetization water dispenser, which comprises a base case and a water faucet, wherein the base case is provided with a concave cavity for loading a purified water barrel, a hot water cavity and a magnetization cavity are arranged inside the base case, both sides of the magnetization cavity are provided with a magnetic field generating device capable of forming a directional magnetic field in the magnetization cavity, a water delivery fence group consisting of at least one piece of water delivery fence orthometric with the directional magnetic field is also arranged in the magnetization cavity, the water delivery fence is formed by folding one section of a water delivery pipe in a reciprocating way, all water delivery fences are mutually connected in series, a water inlet of the water delivery fence group is connected with a water falling opening of the concave cavity, the water outlet is divided into two paths, one path is connected back to the water inlet through a circulating pump, the other path is connected to a buffer cavity and is then connected to the water faucet through the buffer cavity, a magnetic susceptibility detection meter is arranged in the buffer cavity, and the magnetic susceptibility detection meter is correlative with the circulating pump so that the circulating pump continuously operates when the magnetic susceptibility of the water body does not reach the standard. The purified water can be efficiently magnetized through the magnetization water dispenser, so the magnetized water for promoting the human body health can be provided.

The present invention provides a magnetic memory device capable of stably performing information writing operation by efficiently using a magnetic field generated by current flowing in write lines and having a high degree of flexibility in designing. A magneto-resistive element has: a magnetic yoke disposed annularly in a circumferential direction so as to surround a write word line and a write bit line, and having a pair of open ends facing each other while sandwiching a gap provided in a part in the circumferential direction; and a stacked body including a second magnetic layer of which magnetization direction changes according to an external magnetic field and a pair of end faces. The stacked body is disposed in the gap so that each of the pair of end faces and each of the pair of open ends face each other. With the configuration, magnetization of the second magnetic layer can be efficiently inverted and, as compared with the case where the stacked body and the magnetic yoke are in contact with each other, the material of the stacked body can be selected from a wider range and the magnetic and electric performances of the stacked body can be sufficiently displayed.

A fluid-magnetizing device including an arced magnetic collar on which multiple outer casings are disposed. The outer casings are made from magnetic shield material. Multiple magnetic elements are accommodated in the outer casings of the magnetic collar. The magnetic collar has two ends between which multiple resilient members are connected for conveniently and firmly locating the magnetic collar around a fluid pipeline. At least one spiral flow guiding plate is disposed inside the fluid pipeline for guiding the fluid to spirally flow through the fluid pipeline. Accordingly, the contact time between the fluid and the magnetic lines is prolonged. In addition, the multiple magnetic elements are separately arranged to enhance and extend the magnetic lines so as to more efficiently magnetize the fluid in the fluid pipeline.

The invention discloses squirrel-cage water magnetizing equipment which comprises a housing, a channel penetrating through the housing and a magnetizing system arranged in the channel, wherein a water inlet is formed in one end of the channel, and a water outlet is formed in the other end of the channel; the magnetizing system includes at least two magnetic bars which are axially magnetized; one end of each magnetic bar extends to the water inlet, and the other end of the magnetic bar extends to the water outlet; the at least two magnetic bars have at least two axial projections projecting on any cross section of the channel; the at least two axial projections are located at different positions on any cross section. The water flow passing through the channel is subjected to the combined action of the magnetic forces of the magnetic field lines in different directions generated by different magnetic bars, and the hydrogen bonds of associated water molecules can be stretched, bent or even fractured in a short time under the acting forces from different directions, therefore, the water flow passing through the channel can be efficiently magnetized.

Embodiments of the invention improve efficiency in alternating-current demagnetization of a magnetic recording medium. In specific embodiments, magnet fields in a direction slanting to an easy direction of magnetization of recording layer magnetization of a medium in rotation are applied.

A magnetic storage cell including of two magneto-resistive elements to remove in-phase noise in a read output, and reduces a loss of a current magnetic field, when information is written thereinto, to efficiently produce magnetization reversal. In addition, the area occupied by the magnetic storage cell is reduced to increase the storage capacity, and the structure of the magnetic storage cell is simplified to facilitate the manufacturing. The magnetic storage cell including two TMR elements, and an annular magnetic layer provided commonly for the two TMR elements. The TMR elements are disposed in a direction along a laminating surface with respect to each other. A write bit line and a write word line are provided commonly for the two TMR elements. The annular magnetic layer is disposed with its axial direction defined in a direction along the laminating surface, and is passed through by the lines.

The invention discloses a fruit and vegetable cleaning ball for reducing pesticide residues. The cleaning ball sequentially comprises a shell, an active layer, a purification layer and an absorption layer from outside to inside, the shell is made of nano-ceramic materials, a through hole is formed in the shell, the active layer comprises active medical stones and halloysite or tourmaline stones, the purification layer comprises cocoanut active charcoal and pumice stones, and the absorption layer comprise sepiolite. The fruit and vegetable cleaning ball can avoid secondary pollution caused by use of traditional fruit and vegetable cleaning agents, is simple in use method and has good cleaning effect and reuse performance, and the fruit and vegetable cleaning ball is particularly suitable for places such as restaurants, hotels and food processing enterprises which need to clean a lot of fruit and vegetable raw materials.

A method of magnetizing metal, including the steps of: positioning metal to be magnetized in a magnetic field produced by magnetic vector potential; and positioning, in the magnetic field, at least one magnetic-vector-potential inductor which induces the magnetic vector potential, such that the at least one magnetic-vector-potential inductor is located adjacent to the metal for magnetizing the metal, the at least one magnetic-vector-potential inductor having relative permeability whose absolute value is larger than an absolute value of relative permeability of the metal.

The invention provides an overcharge-resistant socket outlet which comprises two alternating current input ends, wherein the two alternating current input ends are divided into a positive way and a native way to be output after passing through a rectifying and filtering module; the negative way is connected with a cathode jack of a socket output end, a positive way is connected with an armature, and the armature can axially move along with a button; the armature is matched with an end of a section of a soft iron, and under the status of powering off, the button is reset to the position which leads the armature to be separated away from the soft iron by a spring; the other end of the soft iron is connected with a base electrode of an amplifier module, an emitting electrode of the amplifier module is divided into two ways, one way of the emitting electrode is connected with an anode jack of the socket output end, and the other way of the emitting electrode is connected with a positive way of the rectifying and filtering module; and a collecting electrode of the amplifier module is connected with one end of a roil wound on the soft iron, and the other end of the roil is connected with a negative way of the rectifying and filtering module. The socket can automatically switch off a power source after the electrical equipment is charged, so that the service life of the electrical equipment can be prolonged.

The disclosure relates to a rotor for an electrical machine, having a central rotor axis. The rotor includes a rotor carrier and at least one superconducting permanent magnet carried mechanically by the rotor carrier. The rotor further includes a magnetization device having at least one superconducting coil element which surrounds the superconducting permanent magnet and which is suitable for magnetization of the superconducting permanent magnet. Furthermore, an electrical machine including such a rotor and a method for magnetization of at least one superconducting permanent magnet of such a rotor are disclosed.

The invention discloses a magnetizing roasting method of high-iron slag / minerals. In the method, fuel gas is used as fuel, a rotary atmosphere furnace is adopted for roasting, and a burner and a combustion fan are arranged at one end in a furnace body of the rotary atmosphere furnace. In the process of magnetizing roasting, the fuel gas and air are firstly premixed in the burner and then lighted; the flow of the fuel gas, the flow of the air and the ratio of the fuel gas to the air are controlled, so that the fuel gas in the furnace performs incomplete combustion; heat produced by combustion is utilized for maintaining the temperature in the furnace, and meanwhile combustion tail gas is maintained to be reducing atmosphere; the combustion tail gas makes contact with the high-iron slag / minerals in the same direction or the reverse direction for magnetizing roasting. According to the method, equipment and operation are simple, and therefore the efficient magnetization of the high-iron slag / minerals is achieved at low cost.