30 results about "Magnon" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.