Method for determining crystalline phase in amorphous films of nanodimensional thickness
SUBSTANCE: bombardment of a surface with an ion beam and recording of intensity of reflected ions is performed; besides, analysed surface is bombarded with inert gas ions with energy of less than 100 eV, and energy spectrum of reflected ions is recorded in the energy range, which is higher than energy of primary ions; then, as per energies of peaks of pair collision in the obtained spectrum there determined are types of atoms in one upper monolayer of atoms, as per the available peak with energy equal to energy of bombarding ions there evaluated is availability of a crystalline phase on amorphous or amorphised surface, including in a film of nanodimensional thickness, and as per the ratio of values of the above peak without any energy losses to a peak or peaks of pair collision there determined is surface concentration of crystalline phase on amorphous or amorphised surface.
EFFECT: reduction of depth of an analysed layer till sub-nanodimensional values; improvement of reliability of analysis results and enhancement of compatibility of equipment for implementation of the method with other analysis methods and process equipment.
The present invention relates to the field of nano - and microelectronic devices and analytical instrumentation and can be used in the development and research of properties of thin film structures on amorphous and crystalline materials.
There is a method of determining the crystal surface condition, which consists in the irradiation surface of the electron beam and reception of the reflected electrons (diffraction of slow electrons). A disadvantage of the known method is the low compatibility of analytical devices for its implementation with devices for other methods of analysis or process equipment if vacuum processing. The analyzer apparatus of the method of diffraction of slow electrons takes about the studied object solid angle of more than 120 degrees, which complicates the integration of other analytical devices. The measurements contain information about the translational symmetry and do not contain information about the types of surface atoms [V.T. Cherepin, Vasiliev M.A., Methods and instruments for surface analysis of materials. The Handbook. - Kiev: Naukova Dumka, 1982. - 600 C.].
Closest to the proposed invention is a method for determining the crystalline phase in the amorphous films, which consists in bombarding the surface with an ion beam and a reception intensity of tragen the x ions. This method, also called the method of pathography, is implemented using proton high (>100 Kev) based on Rutherford scattering and has a great depth of the analyzed layer, namely the fraction of a micrometer, which is beyond the limits of nanotechnology dimensions and analytical requirements of microelectronics [2. Lyman K. Interaction of radiation with solids and elementary education defects. / Lane. from English. Geamana. - M.: Atomizdat, 1979. - 296 S.; 3. Petrov N.N., Abroyan IA Diagnosis surfaces using ion beams. Ed. LSU, 1977. 160 S.].
The technical result is to decrease the depth of the analyzed layer to subnanometer values, improving the reliability of analysis results and improve compatibility of the equipment for its implementation with other methods of analysis and process equipment.
The technical result is achieved in that in the method of determination of the crystalline phase in the amorphous films, which consists in bombarding the surface with an ion beam and record the intensity of the reflected ions, the analysed surface is bombarded with ions of inert gas with hyperthermal energy range (below 100 eV) and record the energy spectrum of the reflected ions in the energy range, more energy primary ions, then the energies Pico is a pair collisions in the received spectrum determine the types of atoms in one the top monolayer of atoms, the presence of a peak with energy equal to the energy of bombarding ions is judged on the presence of a crystalline phase to an amorphous or amalfitano surface of a crystalline material, including film subnanometer thickness, and the ratio of the specified peak without loss of energy to the peak or peaks of pair collisions determine the surface concentration of the crystalline phase to the amorphous or amalfitano surface.
Figure 1 presents a diagram of the device for implementing the method.
Figure 2 shows the energy spectra of ions Ne+(E0=28.8 eV), scattered by the surface of the InAs(l00)crystal surface; b) the surface after amorphization ion Ne, at the dose of ions D=1017ion·cm-2E0=2 Kev.
The analyzed object (the object) is a material, on which surface contains areas with crystalline and amorphous structures subnanometer thickness defined units monoatomic layers.
The device for implementing the method for determining the structural - phase States and transitions of the surface contains a vacuum measuring chamber 1 with an analytical device and measuring system 7. In the vacuum chamber are vacuum manipulator with holder 2 for the analyzed object 3, ion cannon 4 wipe thermal energy ion beam (E 0=2-100 eV), the energy analyzer 5 in the specified energy range, the ion gun 6 low energy E=0.1-10 Kev for the modification of the structural state of the surface. The measuring system 7 includes a pulse amplifier 8 and the recording device 9 and allows to measure the currents at the output of the collector is in the range of 10-12-10-19A (1-107imp/s).
Ion cannon 4 is designed for the irradiation of the analyzed surface with an ion beam of hyperthermal energies with a given mass and energy. Energy analyzer 5 to the collector in the form of a secondary electron multiplier is intended to highlight the energy spectrum of the ion flux of hyperthermal energy scattered from the surface with different energies and angles. Ion cannon low energies 6 is used for amorphization of the surface (at high current density beam) and to improve the crystal structure (at low current densities of the beam). The measuring system 7 has a broadband pulse amplifier 8 connected to the collector of the analyzer, and the recording device 9 for amplifying and pulse count.
The measuring system 7 has a broadband pulse amplifier 8 connected to the collector of the analyzer, and the recording device 9 for amplifying and pulse count.
The principle of operation of the device is to analyze the structural condition of nanoscale layers. The ion gun 5 analyzed the surface of the object 4 is irradiated probing ion beam of hyperthermal energy E<100 eV. The part incident on the surface ions are scattered (reflected) from the atoms of the surface at different angles with different energies in the single binary elastic collisions with surface atoms without changing the internal state of the ion and atom surface. This collision of the ion with atom due to the comparability of their masses change their kinetic energies. When the scattering at a particular angle of the incident ion in the collision transfers energy to the atom. The amount of transmitted energy is greater, the lighter the atom surface. By measuring the energy scattered at a certain angle of ions and knowing the mass and the initial ion energy and the scattering angle from the original direction, you can use the formulas of pair collisions of balls to determine the mass of the surface atoms, which are scattered ions.
In this paper, for the first time found that with the bombardment of the surface ions hyperthermal energies portion of the ions reflected from the surface without energy loss and no loss of charge. This group of ions creates a peak in the spectrum at an energy equal to the energy of the primary ions. For the first time established that this peak is present in the spectrum for crystalline materials and is not observed is expressed as in amorphous materials, and crystalline materials with amalfitano surface. The magnitude of the peak without energy losses, pointing to the crystal surface, relative to the maximum of the pairwise scattering increases with decreasing energy of the primary ions. The peak without energy loss to the magnitude of the peak pair scattering at a constant energy of the primary ions increases with the increase of the crystalline phase.
Figure 2 shows the spectra of scattered ions hyperthermal ion-surface crystalline indium arsenide InAs(l00) (a) and the surface of the crystalline InAs, amalfitano ion beam (b) with an energy of 2 Kev. It is known that the thickness amalfitano layer at such energies amorphization is not more than 100 Å. No peak no loss of energy in the spectrum (b) hypermiling energies indicates that the surface Amalfitana, and the crystalline phase is missing. Amorphization of the surface by ion beam with energy of 2 Kev indicates that the thickness amalfitano layer does not exceed tens of angstroms. The presence of a peak without loss of energy in the spectrum of the scattered ions and its dependence of the lattice structure first established authors.
Comparative analysis of the prototype showed that the depth of the analyzed layer of the proposed method is limited by the limit of nanoscale thickness (100 Å). Review of the composition, conducted using a paired ion collisions with surface atoms, the thickness is 1 atomic layer. In comparison with the prototype, the thickness of the analyzed layer less than not less than 10 times, if we take the lower limit of the thickness analysis 0.1 μm.
The way to determine the crystalline phase in the amorphous films of nanoscale thickness, consisting in the bombardment of the surface by the ion beam and the reception intensity of the reflected ions, characterized in that the analyzed surface is bombarded with ions of inert gas with energy less than 100 eV and record the energy spectrum of the reflected ions in the energy range, more energy primary ions, then the energies of the peaks of the pairwise collision in a received spectrum determine the types of atoms in one the top monolayer of atoms, in the presence of a peak with energy equal to the energy of bombarding ions is judged on the presence of a crystalline phase to an amorphous or amalfitano surface, including the nanoscale film thickness, and as the ratio of the specified peak without loss of energy to the peak or peaks of pair collisions determine the surface concentration of the crystalline phase to the amorphous or amalfitano surface.
FIELD: measurement equipment.
SUBSTANCE: use: to measure change in the local concentration of impurities in the liquid flow at the entrance to the measuring cell. The substance is that the first change of impurity concentration is determined in time within the measurement cell to the fluid containing an impurity, wherein the concentration changes with time at the entrance of the measuring cell is known, and they find the impulse response of the measuring cell using the deconvolution method. Then they determine the change in the impurity concentration within the measuring cell for the sample liquid with an unknown impurity concentration at the entrance. They calculate the unknown concentration of impurities upon entering the measuring cell using the found impulse response of the measuring cell and a definite change in the impurity concentration inside the cell.
EFFECT: improving the accuracy of determining concentration of impurities without changing configuration of a measuring cell.
8 cl, 5 dwg
FIELD: radio engineering, communication.
SUBSTANCE: offshore hydrophysical system has a rigid support structure which joins self-contained geophysical units, each performing a specific measuring or synchronising function, enclosed in separate pressure-resistant housings, wherein each pressure-resistant housing is equipped with a radio-frequency receive/transmit modem, mounted inside the housing on an insert which is transparent for electromagnetic radiation.
EFFECT: high reliability of offshore measuring devices, easier operation thereof and unification of offshore measuring equipment.
SUBSTANCE: device includes a loading device, comprising a metal body connected with a grounded base, a recording system comprising amplifiers, an analogue-to-digital transducer, a computer and screened cables. At the same time the loading device comprises a rock-breaking tool installed on a drilling machine, and a system of axial load supply comprising the following serially connected component: a pulley of axial load feed, a system of blocks and a system for suspension of weights installed on the frame. Also the device comprises a closed circulation system for bottomhole cleaning and cooling of the rock-breaking tool, a recording system comprising a pressure gauge, a phototach, a vibration sensor, a channel for registration of a permanent component of current and a channel for recording of an alternating component of current. The method includes installation of a sample in a clamp, deformation of a sample with the help of a loading device, registration of an arising electromagnet signal with a registration system. At the same time, setting experiment parameters, the initial and final positions of the axial load feed system are marked, accordingly at the start and end of the experiment, a boring pump motor is switched on, power is supplied to a three-phase transformer, from which power is then sent to a motor of a drilling machine, the rock-breaking tool is put in contact with the sample, and the required axial load is set, frequency of rock-breaking tool rotation is fixed by the phototach, pressure of the flushing liquid is recorded with the pressure gauge, plant oscillations are fixed by a vibration sensor, and along the channels for DC and AC the generated electromagnetic radiation is detected.
EFFECT: possibility to imitate loading of a sample with drilling, with variation of the experiment mode, under permanent registration of electromagnetic radiation parameters in process of sample damage, in the form of permanent and alternating components of current, and also the value applied to the load sample.
2 cl, 7 dwg
SUBSTANCE: electrostatic charged particle energy analyser has coaxially arranged inner and outer cylindrical electrodes; a screening electrode that is electrically connected to the inner cylindrical electrode; inner and outer correcting rings that are electrically insulated from each other and from the cylindrical electrodes, made on the lateral surface of the cylindrical electrode and entrance and exit annular recesses (windows) for flight of secondary electrons that are tightened by a small-structure metal grid; an analysed sample; a built-in electron gun for generating a focused stream of primary electrons; an exit hole diaphragm; an electron receiver; a potential sweep unit of the outer cylindrical electrode; a sweep voltage divider connected to correcting rings, wherein correcting rings located nearer to the entrance window have are cone-shaped, and correcting rings located near to the exit window are discs with openings, wherein the system for compensating for edge effects consists of two pairs of correcting rings which form an electrostatic field in the operating space of the analyser, which provides fourth-order angular focusing of near the angle of 40°.
EFFECT: high energy resolution.
SUBSTANCE: invention relates to flaw inspection and nondestructive checks. Invention consists in using pulses of surface electromagnetic waves radiated forward and/or backward relative to train direction, registering reflection of said pulses from irregularities of the track and defining type of track and/or rolling stock defects from character of said irregularities.
EFFECT: detection of dangerous macroscopic defects at distance exceed stopping distance and registration of derailment.
SUBSTANCE: between electrodes with fixed distance between them voltage is supplied, the arising current melts and evaporates a thin wire, which is located between electrodes, the distance from the cathode to the anode is selected such that the discharge without the wire will not occur spontaneously, and between electrodes conditions are created for avalanche breakdown of a discharge gap arising in case there are vapours of the evaporating wire in air. At the same time the section around the wire and cathode surface is surrounded with a dielectric, and as voltage is supplied to a discharge gap in the section of the cathode surface limited with the dielectric, the energy is concentrated, which locally heats this section of the cathode surface.
EFFECT: local heating of a cathode section in scientific research.
SUBSTANCE: alkali vapour signalling device (analyser), which uses a pH metric, having a housing, a reaction vessel filled with the analysed solution, an electrode platform-holder; a measuring and a temperature electrode placed in the analysed solution; devices for controlling, processing and displaying measurement result information; an electrical connection of the output of the measuring electrode, thermoelectrode with the device for controlling, processing information and displaying the measurement result; there is a special device for controlling, processing and displaying information on concentration of alkali vapour; there is a device for sampling alkali vapour sucked from the space over the production bath through a hose, a second normally open valve, a compressor, an ejector; there is a pump, a T-branch, a first normally closed valve, an additional vessel with clean deionised water, pipes; the analysed alkali vapour is periodically passed through the solution of deionised water in the reaction vessel; a combined measuring electrode measures pH of the solution; the deionised water is replaced with clean deionised water for each next cycle of measuring concentration of alkali vapour.
EFFECT: invention enables signallisation of content and amount of alkali vapour in the atmosphere of etching assemblies of a processing line for processing metal in hot baths.
9 cl, 1 dwg
SUBSTANCE: invention relates to monitoring of water areas and cleaning it of various contaminations. Proposed marine complex comprises platform, windmill, photocell station, gas holder unit, electrolysis unit, surface water cleaning unit, water composition control lab and weather station, complex components control unit, gantry, set of propeller shafts, navigation bridge, stem with structural connection angles, brushes for collecting surface water, anchor unit, power unit composed of motor-generator set, battery room, and super capacitor station. Platform perimetre is equipped with external hollow bars to carry paddle wheels for ice breaking. Said hollows bars house fluid washing system assembly units and parts fluid inlet of said system is communicated with helical duct. Turbine coupled via reduction gearbox with generator rotor is mounted at duct outlet. Generator output is connected to power unit battery station. Helical duct inlet is communicated with surface water cleaning unit fluid outlet. Additionally, added are hydrological parameter measurement unit and geophysical parameters unit connected via interface with weather station processor unit. Besides, proposed complex incorporates ice fathometer.
EFFECT: expended operating performances, pollution-free power generation.
2 cl, 2 dwg
SUBSTANCE: method of extinguishing a thermionic arc with metal electrodes during electric explosion of wire and preventing melting and evaporation of the metal electrodes involves putting the electrodes in polymer covers. When the temperature in the discharge increases, the polymer melts and covers bare areas of the electrodes with a non-conducting film, which breaks the discharge electric circuit, thereby stopping discharge.
EFFECT: extinguishing a thermionic arc with metal electrodes during electric explosion of wire, preventing melting and evaporation of electrodes.
SUBSTANCE: union joint which is not accessible for direct inspection is placed in an alternating magnetic field with fixed frequency of the first parametric inductive transducer connected into a series LC oscillatory circuit, and an accessible union joint known to be operating well is placed in an alternating magnetic field with fixed frequency of the second parametric inductive transducer connected into a series LC oscillatory circuit and connected on a differential circuit to the first parametric inductive transducer of the LC oscillatory circuit, wherein capacitance of the capacitor of the second series LC oscillatory circuit is such that the reactance of the capacitor is equal to twice the reactance of the inductive transducer, i.e., XC=2XL, and the capacitance of the capacitor of the second LC oscillatory circuit is such that the reactance of the capacitor is equal to the reactance of the inductive transducer, i.e., XC=XL and the operating condition of the union joint is determined by deviation of voltage difference from the zero value at the first and second LC oscillatory circuits.
EFFECT: broader capabilities of using the method.
SUBSTANCE: solution for chemical deposition of a composite coating contains components in the following ratio, g/l: nickel chloride 15-25, sodium hypophosphite 15-25, sodium acetate 8-15, nanodiamond powder with particle size of 0.004-0.450 mcm 1-20, silver nitrate 0.5-2, 5% aqueous polyvinyl alcohol solution 0.5-2, fluoroplastic suspension F-4D 2-30 and distilled water - up to 1 l.
EFFECT: improved tribological properties and microhardness of the coating.
1 tbl, 1 ex
FIELD: medicine, pharmaceutics.
SUBSTANCE: invention refers to chemical-pharmaceutical industry and medical equipment and may be used in preparing multifunctional biological active structures for the fixation of dressings and objects. The fixation device consists of a paper carrier made of cellulose and viscous fibres impregnated with a special preparation, dried; with its one side of the prepared carrier coated with an adhesive and with its other side coated with a primer and an adhesive.
EFFECT: improved drape effect, enhancement, easier and faster usage.
6 cl, 1 tbl, 2 ex
SUBSTANCE: invention relates to medicine, namely to traumatology and orthopedics, and can be used for prevention of purulent-inflammatory complications from application of apparatuses of external fixation in the process of treatment of patients in traumatology and orthopedics. For this purpose transosseous osteosynthesis of long tubular bones is performed by introduction of wires and intraosseous rods of compression-distraction apparatus of external fixation into their proximal and distal fragments. Antimicrobial substance is applied on the surface of wires and intraosseous rods before their introduction into proximal and distal fragments, as well as on degreased surface of patient's skin in places of entrance and exit of wires and intraosseous rods. As antimicrobial means used is gel-like nanostructured composite implant. It is replaced on degreased surface of skin in places of entrance and exit of wires and intraosseous rods 2-4 weeks after initial application. Composite implant includes platelet-enriched autoplasma, mixed in ratio 1:1.0-2.0 with granules of complex alloplastic preparation on the basis of hydroxyapatite, which contains 50-60 wt % of collagen. Said complex alloplastic preparation additionally contains 0.08-2.8 wt % of colloid solution of zerovalent metal silver Ag0, or gold Au0, or copper Cu0, or palladium Pd0, or platinum Pt0, which is introduced into its granules at preparation stage. Size of introduced colloid zerovalent metal nanoparticles constitutes from 2 nm to 40 nm.
EFFECT: method ensures efficient prevention of purulent-inflammatory complications in such patients due to elimination of microbial risk of bacterial contaminations in treatment of patients by means of apparatuses of external fixation.
5 cl, 5 ex
SUBSTANCE: invention relates to traumatology and orthopedics and can be applied for surgical treatment for deforming arthritis of ankle joint. Cartilages are ablated from joint surfaces of shin tibia and talus. Cut of skin is performed on external surface in the area of injured ankle joint on posterior edge of external ankle-bone. After exposure of fibula from lower third to its top at the level of joint space of ankle joint oblique osteotomy of fibula is performed above anterior and posterior tibial-fibular and calcaneal-fibular ligaments at 40-50° angle to its longitudinal axis. Anterior and posterior tibial-fibular and calcaneal-fibular ligaments are transversely dissected to 1/3-1/2 of their width. Volume of space formed between joint arthrodised surfaces of tibia and talus is filled with gel-like nanostructured composite implant, which contains platelet-enriched autoplasma in ratio 1:(1-2) with granules of complex alloplastic preparation, based on hydroxyapatite, containing 50-60% of collagen.
EFFECT: method makes it possible to improve possibilities of bone regeneration stimulation.
4 cl, 3 ex
SUBSTANCE: method involves evaporating a target of starting material with a pulsed electron beam with energy of not more than 100 keV, pulse duration of 20-300 mcs, energy density of not less than 1 MJ/cm2; a beam of electrons on the path to the target is passed through a system of generating a gas pressure drop, through which pressure of 1-20 Pa is provided in the evaporation chamber in order to cool particles, wherein particles are deposited on cooled substrates made of metal whose melting point is higher than 900°C, and the coefficient of linear thermal expansion is close to that of the deposited layer of aluminium oxide, the thickness of which is controlled in the range of 5-40 mcm by deposition time of 5-20 minutes, and radiation sensitivity is controlled by final heat treatment in the range of 550-900°C for 10-20 minutes.
EFFECT: high accuracy and reliability of detecting doses of short-range charged particles of nuclear radiations, including complex fields using TL or OSL techniques.
SUBSTANCE: method involves obtaining a biocompatible coating on dental implants made of titanium and alloys thereof, which involves placing articles into an aqueous electrolyte solution containing potassium hydroxide and nanostructured hydroxyapatite in form of an aqueous colloidal solution, and exciting micro-arc discharges on the surface of the articles. The treated articles are oxidised in a chemical-resistant non-conducting bath: two batches of treated articles are simultaneously placed in the electrolyte solution by pre-attaching articles of one batch to terminals for treated articles, and articles of the other batch to terminals of an auxiliary electrode; and the electrolyte further contains sodium hydroxide, sodium hydrophosphate, liquid sodium glass, sodium metasilicate, in the following ratios, with respect to mass of dry substance in g/l of the composition: potassium hydroxide KOH - 2, sodium hydroxide NaOH - 1, sodium hydrophosphate Na2HPO4×12H2O - 5, liquid glass nNa2O·mSiO2 (M=3.2) - 5, sodium metasilicate Na2SiO3×9H2O - 8, nano-dispersed hydroxyapatite - 0.5-5. Deviation from said concentrations of electrolyte components does not exceed ±10%.
EFFECT: improved method.
1 tbl, 4 dwg, 1 ex
SUBSTANCE: composition for making sensor coatings contains antimony-doped tin dioxide of the formula SbxSn1-xO2, where x=0.1-0.3, and water in ratio SbxSn1-xO2:H2O = 89-87:11-13 wt %. The method of preparing the composition involves hydrothermal treatment of tin and antimony hydroxides at 170°C for 48 hours. The tin and antimony hydroxides are obtained by dissolving Sn and Sb metal in concentrated hydrochloric acid, 18-20 wt %, while adding 3-5 wt % concentrated HNO3. The obtained solution is 2-3 times diluted with distilled water and a calculated amount of ammonia solution is added. Using a simple scheme, the disclosed method enables to obtain nanoparticles of said composition SbxSn1-xO2 with size of 30 nm and surface area of 154 m2/g, which can be used as the basic component of electroconductive ink for printing sensor arrays and microcontacts.
EFFECT: low labour and power consumption.
3 cl, 6 dwg, 3 ex
SUBSTANCE: invention can be used in magnetic nanoelectronics for magnetic registering media with high recording density, for magnetic sensors, radio-absorbing screens, as well as in medicine. Method of obtaining magnetite nanoparticles, stabilised with polyvinyl alcohol, includes obtaining magnetite in alkali medium of mixture of salts of bi- and trivalent iron and polyvinyl alcohol with weight content in initial mixture from 4 to 18 wt %, dispersion, washing and carrying out all operations under continuous ultrasound impact. Process of sedimentation of salts of bi- and trivalent iron and polyvinyl alcohol is carried out in ammonia vapour, with application of aqueous ammonia (NH4OH) or hydrazine hydrate (N2H4·H2O).
EFFECT: invention makes it possible to reduce scatter of magnetite nanoparticles by size, reduce labour consumption and expenditures in the course of process.
2 dwg, 2 ex
SUBSTANCE: invention relates to field of catalysis. Described is catalyst for recycling heavy oil fractions, in which active component, selected from nickel, or cobalt, or molybdenum, or tungsten compounds, or any their combination, is applied on inorganic porous carrier, consisting of aluminium oxide, dioxides of silicon, titanium or zirconium, alumosilicates or iron silicates, or any their combination, characterised by the fact that said catalyst contains macrospores, which form regular spatial macropore structure, and portion of macropores with size more than 50 nm constitutes not less than 30% in total specific volume of said catalyst pores.
EFFECT: increase of catalyst activity.
4 cl, 3 dwg, 1 tbl, 7 ex
SUBSTANCE: invention refers to medicine, namely to experimental studies in oncology and may be used for assessing the anti-tumour action of metal nanoparticles (NP). An iron nanoparticle suspension 1.25 mg/kg is introduced into grafted Pliss lymphosarcoma intratumourally. That is followed by the paratumoural introduction of methotrexate 0.2 mg/kg. The tumour is locally heated to temperature 42-43°C using an electromagnetic UHF emission at frequency 12.7 MHz for 10 minutes. The therapy requires 5 such sessions in total every 48 hours. That is followed by calculating an effectiveness index, a complete regression percentage and Pliss lymphosarcoma growth inhibition percentage.
EFFECT: method intensifies the antitumor effect of the thermal chemotherapy without increasing body toxicity.
FIELD: magnetic materials whose axial symmetry is used for imparting magnetic properties to materials.
SUBSTANCE: memory element has nanomagnetic materials whose axial symmetry is chosen to obtain high residual magnetic induction and respective coercive force. This enlarges body of information stored on information media.
EFFECT: enhanced speed of nonvolatile memory integrated circuits for computers of low power requirement.
4 cl, 8 dwg