56 results about "Magnetic order" patented technology

The invention concerns a magnetic memory, whereof each memory point consists of a magnetic tunnel junction (60), comprising: a magnetic layer, called trapped layer (61), whereof the magnetization is rigid; a magnetic layer, called free layer (63), whereof the magnetization may be inverse; and insulating layer (62), interposed between the free layer (73) and the trapped layer (71) and respectively in contact with said two layers. The free layer (63) is made with an amorphous or nanocrytallized alloy based on rare earth or a transition metal, the magnetic order of said alloy being of the ferromagnetic type, said free layer having a substantially planar magnetization.

In a method of producing magnetic particles which includes the steps of preparing alloy particles capable of forming a CuAu or Cu₃Au hard magnetic ordered alloy phase and of forming magnetic particles for forming CuAu or Cu₃Au magnetic particles, a plurality of solutions L1 and L2 for preparing the alloy particles are passed in a thin-plate laminar flow and diffused in the direction perpendicular to the flow direction at the contact interface of the solutions L1 and L2 in a mixing channel by using a microreactor, whereby a uniform mixing reaction is conducted in a short time.

The invention relates to a Ni-Mn-Ge magnetic shape memory alloy of which the chemical formula is NixMnyGezMa, wherein M is a main group element or transition group element; and 51<x<55, 31<y<40, 5<z<20, a<5, x+y+z+a=100, and x, y, z and a represent atomic percents. The alloy is a monocrystalline material or polycrystalline material. The main group element is In, Sn, Sb, As or Si; and the transition group element is Ti, Fe or Co. The magnetic material with magnetic shape memory effect has shape memory effect and ferromagnetic property, and appears the property of entropic change (magnetic card effect) caused by magnetic-field-driven phase change and magnetic order degree change, wherein the change value is up to S=8J/Kkg.

The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form a CuAu-type or Cu₃Au-type hard magnetic ordered alloy phase on a support, oxidizing the layer, and annealing the layer in a non-oxidizing atmosphere. The invention also relates to a method of producing a magnetic particle including producing an alloy particle that can form a hard magnetic ordered alloy phase, oxidizing the alloy particle, and annealing the particle in a non-oxidizing atmosphere, and a magnetic particle produced by the foregoing production method. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic ordered alloy phase, oxidizing the layer, and annealing the layer in a non-oxidizing atmosphere.

The invention relates to a magnetic memory with write inhibit selection and the writing method for same. Each memory element of the invention comprises a magnetic tunnel junction (70) consisting of: a magnetic layer, known as the trapped layer (71), having hard magnetisation; a magnetic layer, known as the free layer (73), the magnetisation of which may be reversed; and an insulating layer (72) which is disposed between the free layer (73) and the trapped layer (71) and which is in contact with both of said layers. The free layer (73) is made from an amorphous or nanocrystalline alloy based on rare earth and a transition metal, the magnetic order of said alloy being of the ferrimagnetic type. The selected operating temperature of the inventive memory is close to the compensation temperature of the alloy.

The invention belongs to the technical field of advanced nano materials, and specifically relates to a magnetic ordered mesoporous carbon-based or polymer-based core-shell structural composite microsphere and a preparation method thereof. According to the preparation method, magnetic nanoparticles are adopted as seeds, and the surface of the magnetic nanoparticles is coated with a dense silica protective layer with a sol-gel method; a macromolecular surfactant/polymer layer composite material of an ordered mesostructure is deposited on the surface of silicon dioxide by adopting an interface co-assembly technique and using a large molecular weight block copolymer as a templating agent; and finally, a magnetic mesoporous carbon-based composite microsphere having a strong surface hydrophobicity is obtained by calcination and carbonization in nitrogen, or a surface functionalized magnetic mesoporous polymer-based composite microsphere is obtained by removing the templating agent on the surface of the macromolecular with a solvent extraction method. The composite microsphere provided by the invention has the characteristics of strong magnetic responsiveness, relatively large ordered mesoporous passages, regular and ordered shell core structure, controllable hydrophilia and hydrophobicity and easy material transport and diffusion, and has important application prospects in the fieldof adsorption and separation.

The invention discloses an airflow and air bubble spinning device for preparing a magnetic ordered nano composite material and a method for spinning by utilizing the device. The airflow and air bubble spinning device comprises a liquid storage groove, an air bubble spraying pipe, a glass pipe, an air bubble generator, an air spraying pipe, an airflow generator, a receiving device arranged above the air bubble spraying pipe, a bracket platform which is fixedly connected with the receiving device, a magnetic control device mounted on the bracket platform and a liquid feeding device, wherein one end of the glass pipe is communicated with the air bubble generator and the other end of the glass pipe is communicated with the interior of the air bubble spraying pipe; the air spraying pipe is arranged on the side face of the air bubble spraying pipe and is connected with the airflow generator. In a spinning process, air bubbles are formed on the surface of a polymer solution containing magnetic nano-particles; after rising and breaking, the air bubbles are further subjected to stretching and thinning with airflow as power to form a lot of disordered magnetic nano fibers; and the disordered magnetic nano fibers do regular movement in a magnetic field control region generated by the magnetic control device to form a lot of ordered magnetic nano fibers and the ordered magnetic nano fibers are collected on the receiving device.

The invention discloses a magnetic ordered mesopore composite material, as well as a preparation and application thereof. The preparation method of the material comprises the following steps: modifying the surfaces of cobalt ferrite nano particles with a cationic surfactant, namely hexadecyl trimethyl ammonium bromide (CTAB), uniformly mixing the product with a segmented copolymer, namely EO130PO70EO130 (F108) and CTAB in an alcohol water system, and adding tetraethyl orthosilicate. The composite material is of a spherical microstructure with uniform size under the observation of a transmission electron microscope, and the magnetic nano particles are coated with the inside of MCM-48 silicon dioxide balls; the magnetic ordered mesopore composite material which is synthesized by the method has excellent magnetic property, maintains large specific surface area and pore volume, and can be applied to the field of adsorption, separation, catalysis, information storage, biological medicine, and the like.

The invention relates to a preparation method of magnetic ordered mesoporous carbon nanospheres for magnetic targeted drug delivery. Aiming at the defects of non-specificity and high toxicity of antitumor drugs, with phenol, formaldehyde, sodium hydroxide and alpha-type iron oxide as raw materials and iron nitrate as a magnetic agent, after hydrothermal synthesis and vacuum sintering at high temperature are conducted, the magnetic ordered mesoporous carbon nanospheres are prepared as a controlled release formulation of a cancer targeted drug. According to the preparation method, the process is advanced, and data is complete and accurate; the product is black powder particles, the particle size is <= 100 nm, the specific surface area of the nanospheres reaches 344.9 m<2>/g, the particles have magnetic ordered mesoporous structures with the pore diameter of the mesoporous <= 3 nm, and the purity of the product reaches 99.8%; the preparation method of the magnetic ordered mesoporous carbon nanospheres is advanced.

The invention relates to an environmentally-friendly dry powder emulsion paint for an inner wall and a preparation method thereof. The environmentally-friendly dry powder emulsion paint for the inner wall is prepared through the following raw materials in parts by weight: 20-35 parts of white cement, 20-35 parts of calcium carbonate powder, 8-18 parts of ash calcium powder, 30-40 parts of modified degreased soybean powder pulp, 5-10 parts of titanium dioxide, 10-20 parts of propolis powder, 6-8 parts of water soluble glucan, 4-6 parts of flatting agent, 2-3 parts of organobentonite, 1-3 parts of nanometer magnetic ordered mesoporous medium, 2-3 parts of antioxidant, and 1-3 parts of additive, wherein the additive is at least one of flame-retardant powder, nanometer negative ion powder and an antistatic agent; the flatting agent is a liquid acrylic flatting agent. The environmentally-friendly dry powder emulsion paint for the inner wall is reasonable in raw material selection, and proper in matching; compared with an existing emulsion paint, the prepared dry powder emulsion paint has the advantages of being outstanding in water resistance, outstanding in bonding performance, high in consistency in the drying process, and high in flatness; in addition, the emulsion paint is high in stability during the drying process, is influenced slightly by the outside condition, and is hard to discolor; in addition, the emulsion paint is outstanding in antibacterial capacity, high in static resistance and high in fire retardance.

The invention discloses a position detecting device and a signal processing device and method thereof. The position detecting device comprises a rotor and a stator covering the rotor inside, wherein the rotor comprises a first magnetic steel ring and a second magnetic steel ring which are fixed on a rotation axis; the first magnetic steel ring is uniformly magnetized into N (<=2n) pairs of magnetic poles and the adjacent two poles have opposite polarity; the total number of the magnetic poles of the second magnetic steel ring is N and the magnetic order is determined according to the specificmagnetic order algorithm; and m-numbered magnetic induction elements which are distributed at a certain angle and correspond to the first magnetic steel ring are arranged on the same circumference with the center of the first magnetic steel ring as the circle center on the stator, and n-numbered magnetic induction elements which are distributed at a certain angle and correspond to the second magnetic steel ring are arranged on the same circumference with the center of the second magnetic steel ring as the circle center on the stator. The device and the method of the invention can simplify theproduction process, improve the measuring precision, lower the production cost and improve the cost performance.

The invention relates to a fiber material with a health function and a preparation method thereof. The fiber material with the health function is a composite layer structure composed of an inner layer and an outer layer, wherein the inner layer is compounded by a trace transfer layer, an element transformation layer and a physical activation layer; the outer layer is a latex function layer; the trace transfer layer adopts polyester concentrated screen cloth; the element transformation layer adopts an interwoven non-woven fabric; the physical activation layer is coarse negative ion cloth; and the latex function layer is composed of the following components in parts by weight: 50-65 parts of latex, 10-20 parts of a synthetic resin, 5-10 parts of negative ion powder, 20-40 parts of safflower wormwood slurry flour, 5-10 parts of far infrared mineral substance, 20-40 parts of bamboo charcoal fiber powder, 5-20 parts of diatom ooze and 3-5 parts of magnetic ordered mesoporous media. The healthy fiber board comprising traditional Chinese medicine components, negative ions and far infrared emission components is scented, dry and comfortable and capable of improving energy, is used for prompting breathing and adsorption of insole materials of shoes, promoting blood circulation, dredging the channels, invigorating the circulation of blood, defying age and resisting allergy, and can effectively inhibit bacteria and prevent foot odor.

The invention relates to an anti-mold paper packing box and a producing process thereof. The anti-mold paper packing box comprises a packing box body, wherein at least one anti-mold coating layer is arranged on the outer surface of the packing box body; the anti-mold coating layer is prepared from the following raw materials in parts by weight: 50-60 parts of an acrylic emulsion, 30-40 parts of a PU resin copolymer emulsion, 4-6 parts of polyvinyl alcohol, 0.5-0.7 part of a defoaming agent, 0.1-0.3 part of an inorganic sterilization agent, 1-3 parts of organic bentonite and 1-3 parts of magnetic ordered mesopore carbon. The anti-mold paper packing box has the beneficial effects that the production efficiency is high, a product is high in anti-mold efficiency and convenient to coat, the service life of the anti-mold paper packing box can be greatly prolonged, and the quality of a packed article can be guaranteed.

The invention relates to a synthesis method and application of superabsorbent resin microspheres with antibacterial properties. The synthesis method comprises the following steps: (1) adding a certain amount of magnetic ordered mesoporous carbon nanospheres and a polymer dispersing agent to a certain amount of water, performing full and even stirring, then performing vacuum and/or ultrasonic-assisted degassing treatment for 1-2 h, adding a certain amount of acrylic acid, performing even stirring, and controlling the temperature at 35-45 DEG C; (2) adding a certain amount of sodium hydroxide to the system obtained in the step (1) while stirring, and controlling the temperature at 65-75 DEG C in the reaction process; (3) adding a certain amount of a composite crosslinking agent and an initiator, and controlling the temperature at 80-90 DEG C for a reaction for 2-3 hours so as to form a semi-finished product superabsorbent resin colloid, wherein the composite crosslinking agent is a mixture of NMBA and PEGDA; and (4) putting the superabsorbent resin colloid obtained in the step (3) in a certain amount of a solvent, performing rinsing for 1-3 times, adding a certain amount of a nano-silver antibacterial agent, performing drying until the moisture content at less than 3%, performing pulverization to a certain particle size, and performing magnetic separation so as to obtain the superabsorbent resin finished product.

The invention belongs to thel field of magnetic composite material synthesis technology, and particularly discloses a preparation method of a magnetic ordered mesopore Fe3O4@MCM-48 composite adsorbingmaterial. The preparation method includes steps of combining a ferrite Fe3O4 grain and a mesoporous molecular sieve MCM-48; roasting in a muffle furnace at 450-650 DEG C, so as to obtain the Fe3O4@MCM-48 magnetic mesopore composite adsorbing material with a core-shell structure. The method is low in cost, low in toxicity, simple in operation, gentle in condition, and short in consumed time; the prepared material has magnetism and the mesoporous duct of the molecular sieve; the preparation method has huge prospect in absorption and separation, and drug carrier.

The invention relates to the technical field of ceramics, in particular to a celadon olive green glaze, a preparation method thereof and olive green glazed porcelain. The celadon olive green glaze is prepared from a main ingredient and auxiliary materials in a mass ratio of (8-9):1, wherein the main ingredient is formed by processing the following raw materials in parts by weight: 20-30 parts of Xiaomei glaze soil, 20-30 parts of Xikou glaze soil, 15-25 parts of Zhoucun glaze soil and 5-10 parts of kaolin, and the auxiliary materials are formed by processing the following raw materials in parts by weight: 20-40 parts of silica powder, 6-12 parts of soda ash, 10-18 parts of feldspar powder, 10-15 parts of aluminum hydroxide, 5-8 parts of zinc oxide, 8-12 parts of calcium carbonate, 6-8 parts of borax, 2-6 parts of potassium carbonate, 6-10 parts of barium sulfate and 8-15 parts of magnetic ordered mesoporous nickel ferrite. The celadon olive green glaze provided by the invention has the beneficial effects that the novel celadon olive green glaze is reasonable in raw material selection, cooking temperature is controllable, rate of finished products is high, product uniformity is good, and processing controllability is good.

The invention discloses a magnetic ordered mesopore composite material with a cavity structure, synthesis and application. The magnetic ordered mesopore composite material is prepared by the following steps: uniformly mixing a cationic surface active agent named cetyl trimethyl ammonium bromide (CTAB) which is modified on surfaces of cobalt ferrite nano particles, and a segmented copolymer EO130PO70EO130(F108) and CTAB in an alcohol-water system at room temperature, adding tetraethoxysilane, stirring to be uniform, adjusting the pH value of a stock solution so as to enable the stock solution to be subjected to hydro-thermal reaction for 24 hours under different pH value conditions, filtering, drying, and roasting so as to prepare the composite material. The microstructure of the composite material is a spherical particle with a cavity structure via observation by a transmission electron microscope; the position of the cavity in a silicon dioxide sphere can be controlled well by adjusting the pH value. The composite material synthesized by the method not only has favorable magnetic property, but also can maintain high specific surface area and pore volume; macro molecules such as proteins can be accommodated in the cavity structure, so that the magnetic ordered mesopore composite material has extremely high application value in the fields of adsorption, separation, catalysis, information storage, biological medicine and the like.

The invention discloses a motor, comprising a body, a controller and a magnetoelectric sensor. The motor is characterized in that the magnetoelectric sensor is used for sensing rotation of a motor shaft, transmitting the sensed voltage signal to the controller, obtaining the rotation angle or position of the motor shaft through processing of the controller and further realizing precise control of the motor; the magnetoelectric sensor comprises a rotor and a stator covering the rotor inside; the rotor comprises a first magnetic steel ring and a second magnetic steel ring which are respectively fixed on the shaft of the same motor; n-numbered magnetic induction elements which are uniformly distributed and correspond to the second magnetic steel ring are arranged on the stator; the magnetic order of the magnetic poles of the second magnetic steel ring ensures the n-numbered magnetic induction elements to be output in the Gray code format; the two adjacent magnetic induction elements are output with difference of one-bit change; and m-numbered magnetic induction elements which are distributed at a certain angle are arranged corresponding to the first magnetic steel ring. The motor has low cost, high system reliability and high system response speed.

The invention discloses antibacterial and antistatic wallpaper which comprises a wallpaper body, wherein at least one antibacterial and antistatic coating layer is arranged on each of the inner and outer surfaces of the wallpaper body; the antibacterial and antistatic coating layer is prepared from the following raw materials in parts by weight: 30 to 40 parts of PU resin copolymer emulsion, 6 to 8 parts of polyvinyl alcohol, 0.2 to 0.3 part of a defoaming agent, 0.2 to 0.4 part of a nano antibacterial agent, 0.2 to 0.4 part of an antistatic agent, 1 to 2 parts of organic bentonite and 1 to 3 parts of magnetic ordered mesoporous carbon.

The invention relates to a tree rot repair device and a repair method based on the same. The repair device comprises an upper rod, a lower rod and a pull cable. The top of a bending part is provided with a scraping mechanism for removing old bark and rot parts, a baffle is arranged at the corresponding position of the scraping mechanism on the lower portion of the bending part, and the middle of the bending part is provided with an air suction device. The bottom of the lower rod is provided with switches for controlling the scraping mechanism and the air suction device. The scraping mechanism is further provided with an automatic coating mechanism for coating of a repair agent. The repair agent is formed by processing, by weight parts, 60-80 parts of crystal soda, 15-25 parts of propolis powder, 5-12 parts of organic bentonite, 10-20 parts of water soluble glucan, 6-10 parts of nanoscale magnetic ordered mesoporous media and 80-120 parts of water. The repair agent used in a coating method can quickly repair arbor trunk rot and is high in repair efficiency and good in safety and environmental friendliness.

The invention relates to a wood or paper-based packing box integrated spraying manufacture method. The method comprises 1, processing a packing box semi-finished product plate, 2, pretreating the packing box semi-finished product, 3, putting the packing box semi-finished product wood plate or paperboard into an inlet of a transmission belt of an integrated spraying device, and uniformly spraying a waterproof and moldproof coating to the outer surface of the packing box semi-finished product wood plate or paperboard by the spraying device, wherein the waterproof and moldproof coating is prepared from 80-85 parts by weight of a polyacrylic acid emulsion, 4-5 parts by weight of polyvinyl alcohol, 0.5-0.6 parts by weight of an antifoaming agent, 0.1-0.2 parts by weight of a dispersant, 0.1-0.2 parts by weight of an inorganic bactericide and 4-5 parts by weight of an auxiliary agent and the auxiliary agent is magnetic ordered mesoporous carbon or magnetic ordered mesoporous nickel ferrite, 4, drying the sprayed packing box and discharging the packing box through an outlet of the transmission belt, and 5, carrying out molding through a packing box molding machine to obtain a finished product. The method has high production efficiency. The product has high waterproof and mildew-resistant efficiency, is convenient for coating, has a long service life and guarantees content quality.