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30 results about "Magnon" patented technology

A magnon is a quasiparticle, a collective excitation of the electrons' spin structure in a crystal lattice. In the equivalent wave picture of quantum mechanics, a magnon can be viewed as a quantized spin wave. Magnons carry a fixed amount of energy and lattice momentum, and are spin-1, indicating they obey boson behavior.

Sodium-ion battery cathode material and preparation method thereof

The present invention discloses a sodium-ion battery cathode material and preparation method thereof. The cathode material comprises solid / solution of sodium ferrocyanide-sodium chloride, whereby the molar ratio of sodium ferrocyanide and sodium chloride in solid / solution of sodium ferrocyanide-sodium chloride is x: (1-x), wherein 10% <= x <= 90%. The preparation method of mentioned cathode material includes the following steps of dissolving the sodium ferrocyanide and the sodium chloride at molar ratio of x: (1-x) in the deionized water, to obtain the mixed solution with concentration of between 0.001 and 6mol / L, wherein 10% <=<= x <=<= 90%; adding the ethanol solution with volume of 1 to 1000 times of the mixed solution into the beaker, to be placed on the temperature-speed-controllable magnetic stirrer, adding the magnon for the ethanol solution to obtain rotating speed at certain temperature; moving the mixed solution into the magnetic rotating ethanol solution at certain dropping rate through the speed-adjustable peristaltic pump to obtain the yellowish precipitate; taking the precipitate for vacuum drying to obtain the solid / solution of sodium ferrocyanide-sodium chloride powders. The invention has simple preparation method, and material prepared has high capacity and good cycling performance.
Owner:SHANGHAI SINOPOLY JIAHUA BATTERY TECH +1

Multi-direction magnetic pull type bistable vibration energy catcher

The invention provides a multi-direction magnetic pull type bistable vibration energy catcher which comprises an elongated circular beam, a bottom-open base cover, a substrate and a potential energy trap screw. The substrate is arranged in the opening of the base cover and closes the opening. The potential energy trap screw runs through the center of the substrate. A potential energy trap adjustment magnet is arranged on one end, which is located in the base cover, of the potential energy trap screw. The elongated circular beam is arranged in the base cover, and one end is fixed at the center of the top end face of the base cover. A magnon is arranged on the other end of the elongated circular beam. A tensible transducer is arranged on the substrate face which is connected with the base cover. A magnetic stator is arranged on the side, which is opposite to the magnon, of the transducer. According to the invention, the structure is simple; through symmetrical magnetic attraction force, the multi-direction magnetic pull type bistable vibration energy catcher is a bistable nonlinear system with a magnetic force intervening function, and has a wider operating bandwidth; and in a weak vibration environment, the equivalent piezoelectric coefficient is magnified several hundred times, and more power is conversed and produced.
Owner:SHANGHAI JIAO TONG UNIV

Dynamics of Terahertz radiation

An apparatus for generation of Terahertz radiation comprising: (A) a Magnon Gain Medium (MGM), wherein the MGM supports generation of nonequilibrium magnons; and (B) at least one magnon mirror (MM). The nonequilibrium magnons are generated in the MGM. Interaction between nonequilibrium magnons leads to generation of Terahertz photons.
Owner:TERAHERTZ TECH LLC

Racetrack memory with low-power write

Methods for writing include applying a current pulse to a racetrack memory medium to position a domain in proximity to a thermally triggered magnon source in contact with the racetrack memory medium; activating a heat source / sink in contact with the magnon source to create a thermal gradient in the magnon source, generating a magnon flow in the magnon source; and changing a magnetization in the racetrack memory medium by spin torque transfer from the magnon flow.
Owner:IBM CORP

Method for increasing diffusion length of magnon

The invention discloses a method for increasing the diffusion length of a magnon. The method comprises the following steps: firstly, 40 nm YIG (Y3Fe5O12) is grown on a gadolinium gallium garnet substrate by a pulsed laser deposition method, and after that, a strip-shaped Pt electrode is prepared on YIG by a magnetron sputtering method; the surface of a sample is irradiated by a focused laser beam,and a temperature gradient perpendicular to the surface of the sample is formed on an irradiated part; an unbalanced magnon is generated by parameters of a spin Seebeck effect, the unbalanced magnonperforms in-plane diffusion, a reverse spin Seebeck effect is generated in the Pt electrode when the unbalanced magnon reaches the Pt electrode, and voltage is further generated. The position of a light spot is changed to detect the voltage in Pt, so that the diffusion length of the magnon can be detected. The diffusion length of the YIG magnon is greatly increased.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Tunable generation of terahertz radiation

A method of tunable generation of terahertz radiation comprising: (A) providing a magnon gain medium; wherein the magnon gain medium supports generation of nonequilibrium magnons; (B) generating terahertz radiation in the magnon gain medium; and (C) tuning frequency of the terahertz radiation by causing changes in an external parameter. The substantial tuning of the frequency of the generated terahertz radiation can be achieved by applying an external magnetic field, and by causing changes in a value of the external magnetic field.
Owner:TERAHERTZ TECH LLC

Tunable multilayer terahertz magnon generator

A method for tuning the frequency of THz radiation is provided. The method utilizes an apparatus comprising a spin injector, a tunnel junction coupled to the spin injector, and a ferromagnetic material coupled to the tunnel junction. The ferromagnetic material comprises a Magnon Gain Medium (MGM). The method comprises the step of applying a bias voltage to shift a Fermi level of the spin injector with respect to the Fermi level of the ferromagnetic material to initiate generation of non-equilibrium magnons by injecting minority electrons into the Magnon Gain Medium. The method further comprises the step of tuning a frequency of the generated THz radiation by changing the value of the bias voltage.
Owner:MAGTERA INC

Giant spin-seebeck effect induced magnon transfer torque-assisted MAMR

A magnetic recording device includes a main pole, a coil around the main pole, a trailing shield, and a spin torque oscillation device between the main pole and the trailing shield. The spin torque oscillation device includes one or more first layers, a spacer layer, and a field generation layer. The one or more first layers are over the main pole. The one or more first layers have a first heat conductance or include a low-heat-conductance material. The spacer layer is over the one or more first layers. The field generation layer is over the spacer layer. A heat sink is in contact with the trailing shield. The heat sink has a second heat conductance or includes a high-heat-conductance material. The second heat conductance of the heat sink is higher than the first heat conductance of the one or more first layers.
Owner:WESTERN DIGITAL TECH INC

Electronically controlled magnon valve structure based on sound body wave excitation

The invention belongs to the field of memory devices and discloses an electronically controlled magnon valve structure based on sound body wave excitation. The structure comprises a film acoustic waveresonator substructure, a magnon valve substructure and a ferroelectric exchange bias heterojunction substructure which are on a substrate (1) from the top to bottom. The film acoustic wave resonatorsubstructure is used for providing acoustic wave excitation to a magnetic valve substructure. The resonance frequency and amplitude of an acoustic wave generated by the regulation of the film acoustic wave resonator substructure is used to achieve ferromagnetic resonance to excite the size of a magnetic substream in the magnon valve structure, therefore, the conduction and cutoff of the magneticvalve structure are achieved, and the excitation of the magnon valve substructure and the magnon valve effect thereof are achieved. By improving a key excitation mode of a magnon valve and other substructures which are correspondingly matched and set, the structure can adjust the resonance frequency and amplitude through FBAR to achieve the ferromagnetic resonance to excite the size of the magnetic substream in the magnon valve structure, the on and off of a device are achieved, and a storage function is achieved.
Owner:HUAZHONG UNIV OF SCI & TECH

Visualized oil-paper insulated electric heat combined aging device based on magnon stirring circulation

The invention provides a visualized oil-paper insulated electric heat combined aging device based on magnon stirring circulation. The aging device comprises a working condition voltage generation device, a casing, an oil pipeline, an electric pump, an electrode aging device, a stirrer and a temperature control device, wherein the temperature control device comprises a first thermocouple, a secondthermocouple, a third thermocouple, a heating rod and a thermostat, the first thermocouple and the second thermocouple are respectively mounted on opposite side walls of the casing, the third thermocouple and one end of the heating rod penetrate through a cover plate and stretch into the casing, an input end of the thermostat is connected with the three thermocouples respectively, and an output end of the thermostat is connected with the heating rod. An oil-paper insulation sample in the casing is heated and aged by the heating rod, the heating condition is monitored by the three thermocouples, the heating temperature can be controlled by a worker according to actual needs, the aging speed of the oil-paper insulation sample is speeded up, detection efficiency is improved, and the aging environment can be precisely controlled for improving detection accuracy.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST

A Broadband Electro-Magnon Combination Antenna Excited by Microstrip-Slot

The invention discloses a mcrostrip-gap incentive broadband electric-magnetic vibrator combined antenna. A gap is etched in a shielding conductor of a dielectric substrate with a dielectric constant ranging from 2 to 20, a microstrip feeder and a tuning supporting node are manufactured on the other face of the dielectric substrate, an antenna body of a dipole-groove line combination structure is vertically connected to a position above the gap, the antenna body of the dipole-groove line combination structure is formed in the mode that a top-layer radiation unit and a bottom-layer radiation unit which are antisymmetrical are designed on the dielectric substrate with the dielectric constant ranging from 2 to 20 in a combined mode, and the top-layer radiation unit and the bottom-layer radiation unit are connected to the two sides of the gap in a crossed mode. An eccentric microstrip line feed mode is adopted, the position of a feeding point, the length of the feeder, the length of the tuning supporting node and the length of a vibrator are changed, the broadband beam antenna with good performance can be obtained, under the condition of not adding a reflection back cavity, high gains and a stable directional diagram can be obtained, the structure is simple and manufacturing cost is low.
Owner:ZHONGTIAN BROADBAND TECH +1

Coherent terahertz magnon laser and coherent terahertz communication system

An apparatus for generation of coherent terahertz radiation is provided. In one example, the apparatus includes one or more multilayer tunable microcolumns. In turn, a multilayer tunable microcolumn can include a substrate, a bottom electrode, a bottom layer of a ferromagnetic material further comprising a magnon gain medium (MGM) coupled to the bottom electrode, a tunnel junction coupled to the ferromagnetic material, a spin injector coupled to the tunnel junction, a pinning layer coupled to the spin injector, a reference layer coupled to the pinning layer and a top electrode. In one example, a containment cavity encloses at least one of the multilayer tunable microcolumns. In one example, a storage cavity encloses the containment cavity.
Owner:MAGTERA INC

Soil improver containing peat and magnon elements, and preparation process thereof

The present invention discloses a soil improver containing peat and magnon elements, wherein the raw materials comprise, by weight, 30-35% of steel slag containing silicon, calcium, iron, titanium and boron, 20-35% of peat, 3-5% of a nitrogen fertilizer, 3-5% of a phosphorus fertilizer, 4-5% of a potassium fertilizer, 20-35% of an acid mixing liquid, 5-10% of water, and 2-5% of rare earth elements. The preparation process comprises: magnetization screening; acid mixing liquid preparing; magnon element mixing liquid preparing; peat adding; fertilizer adding; and rare earth element adding. Compared to the fertilizer in the prior art, the fertilizer of the present invention has the following advantages that the peat, the magnon elements and various nutrient components such as nitrogen, phosphorus and potassium are combined so as to save the agricultural cost and completely improve the hardening of the original soil; the nitrate content is reduced; and the microbial content in the soil is increased by ten thousand times, such that the soil is activated, and the damage of the heavy metals on the soil due to industrial pollution and urban pollution can be subjected to microbial absorption.
Owner:陈耀辉 +5

Coherent terahertz magnon laser and coherent terahertz communication system

An apparatus for generation of coherent terahertz radiation is provided. In one example, the apparatus includes one or more multilayer tunable microcolumns. In turn, a multilayer tunable microcolumn can include a substrate, a bottom electrode, a bottom layer of a ferromagnetic material further comprising a magnon gain medium (MGM) coupled to the bottom electrode, a tunnel junction coupled to the ferromagnetic material, a spin injector coupled to the tunnel junction, a pinning layer coupled to the spin injector, a reference layer coupled to the pinning layer and a top electrode. In one example, a containment cavity encloses at least one of the multilayer tunable microcolumns. In one example, a storage cavity encloses the containment cavity.
Owner:MAGTERA INC

Tunable multilayer terahertz magnon generator

A method for tuning the frequency of THz radiation is provided. The method utilizes an apparatus comprising a spin injector, a tunnel junction coupled to the spin injector, and a ferromagnetic material coupled to the tunnel junction. The ferromagnetic material comprises a Magnon Gain Medium (MGM). The method comprises the step of applying a bias voltage to shift a Fermi level of the spin injector with respect to the Fermi level of the ferromagnetic material to initiate generation of non-equilibrium magnons by injecting minority electrons into the Magnon Gain Medium. The method further comprises the step of tuning a frequency of the generated THz radiation by changing the value of the bias voltage.
Owner:MAGTERA INC

Multidirectional Magnetic Bistable Vibration Energy Harvester

The invention provides a multi-direction magnetic pull type bistable vibration energy catcher which comprises an elongated circular beam, a bottom-open base cover, a substrate and a potential energy trap screw. The substrate is arranged in the opening of the base cover and closes the opening. The potential energy trap screw runs through the center of the substrate. A potential energy trap adjustment magnet is arranged on one end, which is located in the base cover, of the potential energy trap screw. The elongated circular beam is arranged in the base cover, and one end is fixed at the center of the top end face of the base cover. A magnon is arranged on the other end of the elongated circular beam. A tensible transducer is arranged on the substrate face which is connected with the base cover. A magnetic stator is arranged on the side, which is opposite to the magnon, of the transducer. According to the invention, the structure is simple; through symmetrical magnetic attraction force, the multi-direction magnetic pull type bistable vibration energy catcher is a bistable nonlinear system with a magnetic force intervening function, and has a wider operating bandwidth; and in a weak vibration environment, the equivalent piezoelectric coefficient is magnified several hundred times, and more power is conversed and produced.
Owner:SHANGHAI JIAOTONG UNIV

A Spin Wave Phase Shifter Based on Polarization Current Control

The invention relates to a spin wave phase shifter based on polarization current control, which belongs to the technical field of magnon devices. The spin wave phase shifter includes a spin wave waveguide 4, a ferromagnetic layer 1 positioned above the spin wave waveguide, a heavy metal layer 2 positioned above the ferromagnetic layer 1, and connected to both ends of the heavy metal layer for access Two electrodes 3 of the current, wherein there is a gap between the spin wave waveguide 4 and the ferromagnetic layer 1, the long side of the ferromagnetic layer is perpendicular to the transmission direction of the spin wave waveguide, and the ferromagnetic layer is Asymmetric structure to generate shape anisotropy. The spin wave phase shifter based on the polarization current regulation of the present invention is regulated by the SOT effect, and the required current intensity is small; compared with the reversal of the existing polarization current regulation ferromagnetic material, the ferromagnetic layer of the present invention The relaxation result depends on its own shape anisotropy, which can be realized only by passing a short current pulse, and the efficiency and energy consumption are more advantageous.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Tunnel-type magnon emulsion breaking device system process

The invention discloses a designing method of a system process of a tunnel-type magnon emulsion breaking device. Active ingredients in an emulsified solution can be broken before a filter cake is formed, the emulsion breaking, separation and purification of an emulsified body can be respectively carried out in a closed oxygen-free low-pressure tunnel-type quantum collision magnetic field by virtue of a cathode quantum generator and an anode quantum generator, the system process is a novel emulsion breaking device technology, the application prospect in the industry is wide, the emulsion filter and emulsion breaking can be simultaneously completed in a same system device, the discharge of dry slag can be realized by adopting subsequent salt filter or phosphorus washing exchanging desalting process, and the emulsion can be recycled.
Owner:FEATURE-TEC (WUXI) FILTRATION TECH CO LTD

Tunnel-type magnon emulsion breaking process system device

The invention discloses a tunnel-type magnon emulsion breaking process system device. The tunnel-type magnon emulsion breaking process system device consists of a melt tank, a ceramic separation filter, an emulsion melting instrument, a bi-directional valve, a bi-directional stop valve, an emulsion separation instrument, an emulsion breaking detector, a pressure-division vessel, a suction pump, a cathode quantum generator, a tunnel-type quantum collision magnetic field, an anode quantum generator, a magnetic filter, a feeding hopper, a distribution hopper, a conveying pipe, a control valve, a data processor, a program display controller and a substrate. By adopting the tunnel-type magnon emulsion breaking process system device, active ingredients in an emulsified solution produced by the traditional process can be broken before a filter cake is formed, the emulsion breaking, separation and purification of an emulsified body can be respectively carried out in the closed oxygen-free low-pressure tunnel-type quantum collision magnetic field by virtue of the cathode quantum generator and the anode quantum generator, the tunnel-type magnon emulsion breaking process system device is a novel emulsion breaking process system device, the application aspect in the industry is wide, filter and emulsion breaking can be simultaneously completed in a same system device, dry slag can be discharged by adopting the subsequent salt filter or phosphorus washing exchanging desalting process, and the emulsion can be recycled.
Owner:FEATURE-TEC (WUXI) FILTRATION TECH CO LTD

Coherent terahertz magnon laser and coherent terahertz communication system

An apparatus for generation of coherent terahertz radiation is provided. In one example, the apparatus includes one or more multilayer tunable microcolumns. In turn, a multilayer tunable microcolumn can include a substrate, a bottom electrode, a bottom layer of a ferromagnetic material further comprising a magnon gain medium (MGM) coupled to the bottom electrode, a tunnel junction coupled to the ferromagnetic material, a spin injector coupled to the tunnel junction, a pinning layer coupled to the spin injector, a reference layer coupled to the pinning layer and a top electrode. In one example, a containment cavity encloses at least one of the multilayer tunable microcolumns. In one example, a storage cavity encloses the containment cavity.
Owner:MAGTERA INC

An Ultra-Wideband Absorber Based on Impulse Pulse Spectrum Modulation Based on Spin Magnon Periodicity

ActiveCN110808477BRealize the effect of damping and anti-slipRealize power offAntennasUltra-widebandEngineering
The invention discloses an ultra-broadband wave absorber based on spin magneton periodic impulse pulse spectrum modulation. The cover plate, the three-hole socket, and the base shell, the invention realizes the use of the disc brush rheostat plate groove to cooperate with the three-hole socket to form electromagnetic force fluctuations of oblique alignment poles, and connect the suspension push and turn, so that the magnetic pressure is linked to the pendulum at the same time The pull of the wave-absorbing variable resistance band allows the resistance amplifier tube and the filter low-frequency tube to adapt to the shear conversion of electromagnetic force, forming a telescopic slot-type shear resistance operation, and improving the coverage and stability of the compressed magnetic field in the spin magnetic sub-box To improve the efficiency of over-electricity, so that the current pulse can be synchronously increased in modulation density, and the rated value tends to be stable, so that the main board of the wave absorber can operate in the most efficient working state, and improve the single-band performance. Body regulation, forming the complete control and efficient use of the overall wave absorber on the cycle of ultra-broadband magnetic materials.
Owner:林清霞

Magnon magnetoresistance and spin Hall magnetoresistance devices based on magneton valves and magneton junctions

The invention relates to a magneton magnetoresistance device and a spin Hall magnetoresistance device based on a magneton valve and a magneton junction. According to an embodiment, a magneton magnetoresistive device may include: a first magneton conduction layer; a second magneton conduction layer disposed on the first magneton conduction layer; and a second magneton conduction layer disposed on the first magneton conduction layer; An intermediate layer between the conduction layer and the second magneton conduction layer, wherein the first magneton conduction layer and the second magneton conduction layer are formed of a magnetic insulating material, and the intermediate layer is formed of a non-magnetic metal or antiferromagnetic insulators or antiferromagnetic metallic materials.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI
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