361 results about "Curie temperature" patented technology

The invention relates to the technical field of vacuum induction heating temperature control, and discloses a vacuum induction heating temperature closed-loop control system integrated with SCADA (supervisory control and data acquisition), which is characterized in that a functional material layer with preset Curie temperature is compounded on the surface of an induction coil, and the absolute value of phase difference is analyzed by collecting voltage and current signals of the coil in real time; according to the invention, through the synergistic effect of the electromagnetic impedance sudden change characteristic of the functional material layer and the phase difference detection mechanism, non-contact accurate control of the phase change critical temperature of the workpiece is realized; and meanwhile, due to the coupling application of the asymmetric micro-pulse waveform design and the dynamic adjustment strategy, the contradiction between thermodynamic response and electromagnetic interference in a vacuum environment is effectively balanced, and the control precision and stability of the system are remarkably improved.

The invention provides a manganese zinc ferrite material as well as a preparation method and application thereof. The manganese zinc ferrite material is prepared from main components and auxiliary components, the main component is prepared from the following components in molar ratio: 51.5 to 53.0 mol percent of ferric oxide, 17.0 to 18.5 mol percent of zinc oxide and 29.0 to 30.0 mol percent of manganese oxide; the auxiliary components comprise the following components according to the total weight of the main components: 200 to 2000 ppm of nano-scale bismuth oxide, 200 to 2000 ppm of nano-scale calcium carbonate, 200 to 2000 ppm of nano-scale molybdenum oxide, and 0 to 4000 ppm of nano-scale cobalt oxide. By optimizing the components and the proportion of the ferrite material, improving the preparation process and organically combining the formula and the process, the ferrite material with high magnetic conductivity, high Curie temperature, wide frequency and wide temperature is finally prepared, and large-scale popularization and application are facilitated.

The invention relates to the field of piezoelectric ceramic materials, in particular to a piezoelectric ceramic sensor material and a preparation method thereof, the chemical structural formula of the piezoelectric ceramic sensor material is as follows: (1-x) Pb1-yAy (ZrzTi1-z) O3-xSm (Al1-uBu) O3-alpha wt% CuO-beta wt% LiFA is a rare earth element, B is a transition metal element, 0.01 < = x < = 0.1, 0.01 < = y < = 0.1, 0.25 < = z < = 0.75, 0.01 < = u < = 0.1, 0.1 < = alpha < = 1, 0.1 < = beta < = 1, the piezoelectric ceramic sensor material prepared by the invention not only has excellent piezoelectric property, but also has higher Curie temperature, and can be widely applied to various high-temperature sensors.

The invention relates to a manganese zinc ferrite material and a preparation method thereof, the manganese zinc ferrite material comprises main components and auxiliary components, the main components comprise Fe2O3, ZnO and MnO, and the auxiliary components comprise CoO, CaO, Bi2O3 and MoO; and in the main components, the content of Fe2O3 is 52.0 to 53.0 mol percent, the content of ZnO is 18.0 to 19.0 mol percent, and the content of MnO is 28.0 to 30.5 mol percent in terms of mole percent. According to the manganese-zinc ferrite material, the initial permeability mu i is greater than or equal to 12000 in a wide temperature range of 0-145 DEG C, and the manganese-zinc ferrite material has a relatively low temperature coefficient in the temperature range; the magnetic conductivity does not drop under the high frequency of 300kHz, and mu i is greater than or equal to 9000; the Curie temperature Tc is greater than 145 DEG C, so that the stability of the manganese-zinc ferrite material applied to the field of automotive electronics or a conventional anti-EMI common-mode filter is greatly improved.

The present application provides a susceptor for inductively heating an aerosol generating substrate, a preparation method of the susceptor, and an aerosol generating article comprising the susceptor; the susceptor comprises a single alloy prepared by smelting iron, nickel and zircon as main element raw materials, has a Curie temperature of 300-600 DEG C, and the initial magnetic permeability of the alloy presents a peak characteristic with the increase of temperature. The single layer structure susceptor of the single alloy material of the present application realizes the functions of heating and temperature control at the same time, and overcomes the defects of the prior art, such as complex process, high preparation cost, and limited compatibility of electromagnetic induction heating appliances. Meanwhile, the susceptor has a relatively wide magnetic performance variation window and an aerosol generating system performance variation window, and can be flexibly adapted to more aerosol generating substrates.

The invention discloses a low ferromagnetic resonance linewidth BaFe12O19 single crystal and a preparation method thereof, and belongs to the technical field of magnet materials. According to the method, growth of the BaFe12O19 single crystal is realized mainly through multiple times of temperature rising and falling and multiple times of temperature oscillation. Compared with direct cooling, the single crystal grown by the method provided by the invention has higher Curie temperature and saturation magnetization and narrower ferromagnetic resonance line width. Through collaborative optimization of high Curie temperature, high saturation magnetization and low ferromagnetic resonance line width, the BaFe12O19 single crystal can be better applied to the frontier fields of high-frequency electronic devices, high-temperature permanent magnet systems, quantum technologies and the like. The improvement of the performance of the device can promote the development of the device in the directions of high frequency, miniaturization and high energy efficiency, and has strategic significance for new-generation communication, energy and information technologies.

The invention provides NiCuZn ferrite with high magnetic conductivity and a preparation method thereof. The preparation method comprises the following steps: (1) carrying out primary ball milling on raw materials of the NiCuZn ferrite, and pre-sintering to obtain a pre-sintered material; and (2) the pre-sintered material and a doping agent are subjected to secondary ball milling, and after granulation, molding and sintering, the NiCuZn ferrite is obtained, and the doping agent comprises WO3 and TiO2. Through combined doping of WO3 and TiO2, the sample density can be improved, the magnetic conductivity, the Curie temperature and the saturation flux density can be improved, meanwhile, the magnetic loss is reduced, and the final ferrite can be suitable for electronic elements with high requirements for the magnetic conductivity.

The invention belongs to the field of magnetic materials, particularly relates to a high-power garnet ferrite and a preparation method thereof, and provides a high-power garnet ferrite and a preparation method thereof aiming at the defects that high residual magnetism ratio, low resonance line width, high spin wave line width and high Curie temperature of the garnet ferrite in the prior art are difficult to consider at the same time, and the high-power garnet ferrite is obtained through Co < 2 + >-Ge < 4 + > or Co < 2 + >-Si < 4 + > ion combined substitution. The garnet ferrite with high remanence ratio, low resonance line width, high spin wave line width and high Curie temperature can be obtained by reasonably designing the doping amount of Co < 2 + > ions and Mn < 3 + > ions and matching with proper Dy < 3 + > doping. Aiming at the defect that low resonance line width, high spin wave line width and high Curie temperature of garnet ferrite are difficult to consider at the same time, the invention provides a Co < 2 + > ion and Dy < 3 + > ion combined substitution method, so that the garnet ferrite can have low resonance line width, high spin wave line width and high Curie temperature at the same time.

The invention provides an induction heating device, an aerosol generation system and a control method, and the device is used for heating an aerosol generation product comprising a magnetic metal receptor, and comprises an AC power supply module, an excitation winding, a detection winding and a voltage measurement module. After the aerosol generating product is loaded to the induction heating device, the magnetic metal receptor contained in the aerosol generating product is located in the space of the excitation winding; the length direction of the magnetic metal receptor is parallel to the axes of the excitation winding and the detection winding; the Curie temperature of the magnetic metal is higher than 200 DEG C; the temperature measurement precision is high, the influence of parasitic parameters of components on the measurement precision is eliminated, the influence of position change of the magnetic metal receptor on measurement is reduced, and the defects of airflow obstruction, heating interference and energy consumption increase in temperature measurement of an existing active sensor are overcome.

The invention relates to a PZT-based piezoelectric ceramic material with large electrostrictive strain and high Curie temperature in a low electric field and a preparation method thereof. The chemical composition of the PZT-based piezoelectric ceramic material is Pb1-2n-1.5 xLaxSrnBan (ZryTi1-y) O3-zwt% Sn, wherein x is more than or equal to 0.004 and less than or equal to 0.007, y is more than or equal to 0.52 and less than or equal to 0.6, z is more than or equal to 0.3 and less than or equal to 0.7, and n is more than or equal to 0.01 and less than or equal to 0.04. The preparation method of the PZT-based piezoelectric ceramic material comprises the following steps: (1) preparing materials; (2) calcining; (3) granulating; and (4) removing plastic and sintering.

The invention relates to the field of fiber manufacturing, in particular to a magnetic far-infrared dual-response fiber and a preparation method thereof.The magnetic far-infrared dual-response fiber comprises a polymer matrix and a magnetic far-infrared composite material evenly distributed in the polymer matrix; the magnetic far-infrared composite material comprises a nano ferroferric oxide core body and a zirconium carbide coating layer coating the core body, the interior of the nano ferroferric oxide core is doped with transition metal elements, so that the Curie point temperature of the nano ferroferric oxide core is 40-50 DEG C, and the surface of the nano ferroferric oxide core is modified by a cationic surface active agent to form a positive charge layer; hydroxyl is grafted on the surface of the zirconium carbide material. The Curie temperature of ferroferric oxide is precisely regulated and controlled to range from 40 DEG C to 50 DEG C through transition metal doping, a magnetic-far infrared synergistic energy transfer channel is designed and constructed in combination with a core-shell structure, intelligent response with the far infrared emissivity larger than or equal to 0.90 is achieved under body temperature triggering, and the functional strength and large-scale production feasibility are both achieved.

An ultrasound probe for inspecting a component at a temperature above 150° C. includes a shoe that makes contact with the component and an ultrasonic transducer. The transducer includes a probe body defining an internal volume having a body length, the probe body further defining an aperture and a disc of piezoelectric material placed in the aperture, the disc having a front side making contact with the shoe, the disc having an acoustic impedance which includes between 7 MRayl and 25 MRayl and a Curie temperature above 250° C. The transducer also includes a damper fastened to the back side of the disc and extending from the back side into the internal volume for a damper length smaller than the body length.

The invention relates to a cerium-iron-boron permanent magnet material with low content of a non-magnetic phase CeFe2 and a preparation method of the cerium-iron-boron permanent magnet material. The cerium-iron-boron permanent magnet material is composed of the following components in percentage by atom: 11%-17% of Ce, 70%-80% of Fe, 5%-10% of B, 0.1%-3% of Co, 0.1%-3% of Zr and 0.1%-5% of La. The preparation method comprises the following steps of S1, smelting, wherein Ce, La, Fe, Co, Zr and FeB are prepared into a CeLaFeCoZrB alloy cast ingot through electric arc smelting according to the atomic percent composition; s2, melt-spinning: crushing the CeLaFeCoZrB alloy ingot prepared in the S1, and then preparing an alloy strip by using a melt rapid quenching method; and S3, magnetic field annealing: performing vacuum annealing on the alloy strip prepared in S2, wherein the annealing temperature is 2-12K below the Curie temperature Tc of the alloy. Compared with the prior art, the method has the advantages that the phase volume fraction of the non-magnetic CeFe2 phase in the cerium-iron-boron permanent magnet material alloy is remarkably reduced, and the residual magnetism and the maximum magnetic energy product of the alloy are improved.

The present invention relates to the field of piezoelectric ceramic materials, in particular to a piezoelectric ceramic material with high Curie temperature and high piezoelectric coefficient and a preparation method thereof, wherein the structural formula is as follows: (1‑x‑y)(Bi2O2) 2+ (A m‑1 B m O 3m+1 ) 2‑ ‑xLiTaO3‑yLaAlO3, where A is Na + , K + , Ca 2+ , Sr 2+ , Ba 2+ , Pb 2+ 、Bi 3+ ,La 3+ Any one or more of the following; B is Fe 3+ 、Ti 4+ , Nb 5+ , W 6+ Any one or more of the composites; m is an integer between 1‑4; 0<x≤0.2; 0<y≤0.2. The piezoelectric ceramic material prepared by the present invention has a high Curie temperature and excellent electrochemical properties. The maximum piezoelectric constant can reach 35pC / N, which is significantly improved compared with the currently reported bismuth layered structure piezoelectric ceramics.

The invention discloses a piezoelectric ceramic with high Curie temperature and high temperature stability and a preparation method thereof, the composition general formula of the piezoelectric ceramic is xPb (In1 / 2Nb1 / 2) O3-yPbZrO3-(1-x-y) PbTiO3, the value range of x is 0.20-0.50, and the value range of y is 0.10-0.30. The high Curie temperature, the large piezoelectric coefficient and the high coercive field are achieved, the temperature stability of the excellent piezoelectric property at the room temperature to 300 DEG C is achieved, the change rate of the inverse piezoelectric coefficient within the range from the room temperature to 180 DEG C is only 1.4%, and the change rate of the electromechanical coupling coefficient kp within the temperature range from the room temperature to 275 DEG C is only 4.2%.

The invention provides an iron-tin co-doped amorphous gallium oxide-based ferromagnetic ceramic film, and belongs to the technical field of magnetic semiconductor ceramic materials. The preparation method comprises the following steps: sufficiently mixing Ga, Fe and Sn organic precursor solutions according to a certain proportion to form a GaFeSn organic precursor solution; the cleaned single crystal aluminum oxide substrate is coated with the GaFeSn organic precursor solution in a spinning mode; then putting the obtained GaFeSn organic precursor film into a tube furnace with a single temperature zone; under the air atmosphere, the temperature of the tubular furnace is slowly increased to 550 DEG C at the speed of 5 DEG C / min, heat preservation is carried out for 1 h at the temperature of 550 DEG C, annealing treatment is carried out, and the amorphous GaFeSnO magnetic ceramic film which is uniform in thickness and has the amorphous phase and strong ferromagnetism is prepared. Strong ferromagnetism of the thin film is excited with low iron element doping concentration (10%), and the problem of low conductivity caused by transition metal doping in the magnetic ceramic thin film is solved. The amorphous GaFeSnO magnetic ceramic film prepared by the method has strong ferromagnetism of 170 emu / cm < 3 > under 2K and 90 emu / cm < 3 > under 300K, and the Curie temperature of 335K.

The invention relates to the field of piezoelectric ceramic materials, in particular to a piezoelectric ceramic material with high Curie temperature and high piezoelectric coefficient and a preparation method thereof, the structural formula of the piezoelectric ceramic material is as follows: (1-x-y) (Bi2O2) < 2 + > (Am-1BmO3m + 1) < 2-x > LiTaO3-yLaAlO3, A is any one or more of Na < + >, K < + >, Ca < 2 + >, Sr < 2 + >, Ba < 2 + >, Pb < 2 + >, Bi < 3 + > and La < 3 + >; b is any one or more of Fe < 3 + >, Ti < 4 + >, Nb < 5 + > and W < 6 + >; m is an integer between 1 and 4; 0 < x < = 0.2; 0 < y < = 0.2, the piezoelectric ceramic material prepared by the method has high Curie temperature and excellent electrochemical performance, the maximum piezoelectric constant can reach 35pC / N, and compared with the currently reported bismuth layered structure piezoelectric ceramic, the piezoelectric ceramic material has the advantage that the piezoelectric constant is greatly improved.

The invention provides a manganese-zinc ferrite material and a preparation method thereof, the manganese-zinc ferrite material comprises a main component and an auxiliary component, the main component comprises the following components by mole ratio: 45-50 mol% of Fe2O3, 11.5-17.5 mol% of ZnO, and 32.5-43.5 mol% of MnO; according to the total weight of the main components, the auxiliary components comprise the following components in parts by weight: 200 to 2000 ppm of CaCO3, 200 to 2000 ppm of Bi2O3, 200 to 20000 ppm of Co2O3 and 200 to 20000 ppm of NiO, and the auxiliary components do not comprise SnO2, TiO2, CuO and Nb2O5. Due to the specific main formula range and the auxiliary component range, the obtained manganese-zinc ferrite material has high initial permeability, high Curie temperature, high frequency and high impedance.

A temperature control method and apparatus for a magnetic heat-emitting body, and an electronic device. The temperature control method comprises: acquiring parameter information of at least one heat-emitting body in a cigarette to be smoked; calculating a first intensity of a magnetic field that corresponds to a Curie temperature, and controlling a first intensity of current, which passes through a coil inside a smoking set, such that the intensity of a magnetic field that is generated by the coil is constant at the first intensity of the magnetic field; and receiving a temperature adjustment instruction, determining a required temperature corresponding to the temperature adjustment instruction, calculating a second intensity of current on the basis of the required temperature and a resistance temperature coefficient, and controlling the intensity of current, which passes through the heat-emitting body, to be the second intensity of current.

The invention discloses a neodymium-iron-boron rare earth permanent magnet, a preparation method and use thereof. The neodymium-iron-boron rare earth permanent magnet comprises: R: 28.5-33 wt %, wherein RL comprises Pr, Pr≥14 wt %, and RH comprises one or more of Dy, Tb, Gd and Ho; Co: 12-20 wt %; Al: 0.5-1.5 wt %; X: 0.3-1.5 wt %; B: 0.88-1.05 wt %; and a balance of Fe, the microstructure thereof comprises a main phase M, a grain boundary phase A and a grain boundary phase B; the main phase M is R2(Fe, Co)14B having a volume percentage of 90-94%; the grain boundary phase A is R(Fe, Co)2 having a volume percentage of 5-8%; and the grain boundary phase B is R4(Fe, Co)3 having a volume percentage of 1-2%. The neodymium-iron-boron rare earth permanent magnet has a high Co content, a high Curie temperature, a low temperature coefficient, good mechanical properties, a high magnetic energy product and a high coercive force.

The application relates to a nickel-zinc-copper ferrite and a preparation method and application thereof, the nickel-zinc-copper ferrite comprising main components and auxiliary components; the main components comprise Fe2O3 64-66.7 mol%, NiO 9-12 mol%, ZnO 13.5-19 mol% and CuO 3-9.5 mol% with the total mole percentage being 100 mol%; the auxiliary components comprise Bi2O3 0.3-1.5 wt%, Co2O3 0.1-0.6 wt%, CaCO3 0.03-0.08 wt% and ZrO2 less than or equal to 0.1 wt% with the total mass percentage of the main components being taken as a standard. The content of Fe2O3, ZnO, NiO and CuO is controlled, the content of the auxiliary components is matched and adjusted, the prepared nickel-zinc-copper ferrite has high saturation magnetic induction intensity, high magnetic permeability, high Curie temperature, low residual magnetic induction intensity and low specific temperature coefficient, and can be better applied to power inductance or common-mode inductance.

The invention relates to the technical field of ferrite preparation, and particularly provides an iron-poor manganese-zinc ferrite material and a preparation method thereof.The iron-poor manganese-zinc ferrite material comprises main components and auxiliary components, and the main components comprise 65-67 wt% of Fe2O3, 10-12 wt% of ZnO and the balance Mn3O4 by taking the total weight of the main components as 100 wt%; the main components comprise Fe2O3, ZnO, Mn3O4, CaCO3 and Co2O3, the auxiliary components comprise, by weight, 100-2000 ppm of CaCO3 and 1000-10000 ppm of Co2O3, and by controlling the content of Fe2O3, ZnO, Mn3O4, CaCO3 and Co2O3 in the formula, the iron-poor manganese zinc ferrite material has the advantages of being low in temperature, high in magnetic conductivity, high in Curie temperature, high in frequency and high in impedance.

This invention relates to the field of dielectric energy storage ceramics technology, specifically to a high-efficiency BiFeO3-BaTiO3-based relaxor energy storage ceramic, its preparation method, and its applications. The chemical composition of this material is 0.4Bi. 0.9 (Sm 0.5 Gd 0.5 ) 0.1 FeO3-(0.6-x)Sr 0.4 Ba 0.6 TiO3-xSr(Sn) 1 / 3 Zr 1 / 3 Hf 1 / 3 O3-y(40Bi2O3-40B2O3-20ZnO), abbreviated as BF-SBT-xS(SZH)-yBBZ, where x=0,0.05,0.08,0.10, and y takes values ​​of 0,3wt%), utilizes the synergistic refinement of polarization domains by multiple ions at the A and B sites and the reduction of remanent polarization (P r The value of Sr is used to improve energy storage efficiency (η). 2+ Ba 2+ Adjusting Curie temperature, dielectric constant, and temperature stability; introducing Sn 4+ Zr 4+ Hf 4+ This disrupts the localized structure at the B site, leading to relaxor ferroelectricity. Ultimately, compared to the matrix BiFeO3-BaTiO3, it significantly increases the breakdown field strength (E). b ), significantly increasing energy storage density (W). rec This reduces ferroelectric hysteresis and improves charging and discharging efficiency.

The invention provides a hafnium-zirconium-oxygen film, a preparation method thereof and a hafnium-zirconium-oxygen film sensor, and belongs to the technical field of piezoelectric sensors, the hafnium-zirconium-oxygen film is prepared from a hafnium-zirconium-oxygen material, the chemical general formula of the hafnium-zirconium-oxygen material is Aly-HfxZr1-xO2, x is greater than or equal to 0.3 and less than or equal to 0.7, and y is greater than or equal to 0.02 and less than or equal to 0.08. The lead-free hafnium-based oxide is selected as a piezoelectric core, HfxZr1-xO2 is adopted as a matrix, Al is doped to stabilize an orthogonal ferroelectric phase and inhibit oxygen vacancy, d33 = 85-95 pC / N within the thickness range of 10-200 nm and reaches 90% of that of an existing PZT film, and the Curie temperature is increased to 600 DEG C and is greatly increased compared with 350 DEG C of the PZT film. And the material is completely free of lead and conforms to the RoHS instruction.

This invention provides an organic ferroelectric eutectic material, its preparation method, and its applications, relating to the field of ferroelectric materials technology. The organic ferroelectric eutectic material constructs a crystal system with "rigid constraint and flexible adaptation coexisting, dipole order and controllable polarization synchronously" through "molecular selection-supramolecular assembly-crystal structure regulation," achieving a synergistic effect of high Curie temperature, strong polarization characteristics, and excellent flexibility. The preparation method of the organic ferroelectric eutectic material utilizes a simplified "solvent dissolution-solvent evaporation" process, leveraging the mediating effect of the solvent to promote the supramolecular self-assembly of donor and acceptor molecules. This achieves the preparation of an organic ferroelectric eutectic material possessing both high Curie temperature, strong polarization characteristics, and excellent flexibility. The preparation method has multiple advantages, including "stable process, low cost, and suitability for large-area processing," making it a simple, efficient, and universally applicable preparation method suitable for large-scale industrial production.

A device with adjustable exchange bias based on a low-dimensional antiferromagnetic / ferromagnetic insulator heterojunction. A device with adjustable exchange bias based on a low-dimensional antiferromagnetic / ferromagnetic insulator heterojunction. (1) A heterojunction is formed by covering an antiferromagnetic topological insulator with a low-dimensional ferromagnetic insulator; there are two configurations of the heterojunction, namely, the ferromagnetic insulator completely covering the antiferromagnetic topological insulator and the ferromagnetic insulator semi-covering the antiferromagnetic topological insulator; (2) A non-magnetic insulating protective layer is covered above the heterojunction; (3) In the heterojunction, an obvious exchange bias effect can be observed; (4) By changing the coverage range of the ferromagnetic insulator, the sign of the exchange bias can be regulated; (5) The material system used for the device is van der Waals layered materials; by changing the coverage range of the ferromagnetic insulator, the sign of the exchange bias can be regulated; below the Curie temperature and Néel temperature of the magnetic material, the anomalous Hall effect can be measured by using low temperature and magnetic field for magnetotransport measurement.

The application provides an amorphous alloy magnetocaloric performance prediction method and system based on interpretable machine learning, relates to the technical field of material science and engineering, and comprises the following steps: step 1, constructing an amorphous alloy magnetocaloric performance data set, wherein the data set comprises alloy composition data, physical and chemical descriptors, external conditions and structural characteristics of a plurality of amorphous alloy samples and corresponding experimental values of maximum magnetic entropy change and Curie temperature; step 2, screening and optimizing the features in the data set, eliminating the collinearity between the features and performing recursive feature elimination to determine the final feature subsets for predicting the maximum magnetic entropy change and the Curie temperature respectively; and step 3, establishing machine learning models for predicting the maximum magnetic entropy change and the Curie temperature respectively through the final feature subsets, and training and optimizing the models to obtain the trained prediction models. The application realizes a closed loop of high-precision performance prediction, physical mechanism analysis and directional composition design.

The invention relates to a method for producing a helical magnetized rod (12), comprising the following steps: injecting a mixture () containing magnetic particles and at least one binder-forming polymer into a cylindrical tube (); -heating the mixture to a heating temperature between the glass transition temperature of the binder and the Curie temperature of the magnetic particles; aligning the magnetic particles such that the direction of magnetic orientation thereof extends in a plane orthogonal to the longitudinal axis () of the tube and continuously varies with the distance of the plane from one end of the tube; and-cooling the mixture to a cooling temperature below the glass transition temperature of the binder.

Broadband high T c High-conductivity manganese-zinc ferrite and preparation method, belong to ferrite material preparation technical field. High specific surface area raw material is adopted, contact area of powder in ball milling process is increased, reaction activity is improved, and sintering temperature is reduced; MnZn ferrite main formula adopts iron-rich zinc-deficient system, superexchange interaction is enhanced, and material Curie temperature is realized; secondary ball milling introduces combined additives, sintering process grain growth mechanism is regulated by means of fluxing and crystal resistance dual effects, Co2O3 is used to compensate MnZn ferrite magnetic crystal anisotropy constant, and initial magnetic permeability is improved; CaSiO3 is introduced, and is enriched in grain boundary in the sintering process, grain boundary resistivity is improved, and magnetic permeability frequency characteristic is improved; in the sintering process, oxygen partial pressure is accurately controlled in the holding and cooling stages, Fe 2+ Ion generation amount is influenced, sample resistivity is improved, and suitable sintering temperature and holding time are beneficial to grain growth and material densification.

The invention relates to a receptor material and a preparation method thereof, and belongs to the technical field of receptor materials. The receptor material comprises the following chemical components in percentage by mass: 40-55% of Ni, 0.1-1.0% of Cu, 0-15% of Co, and less than or equal to 0.1% of C, Si, Mn, Cr, Mo, Al, P and S in total content. According to the embodiment of the invention, the Curie temperature, the resistivity and the saturation induction density of the material are accurately regulated and controlled by adjusting and optimizing the content of each element, and the performance requirements are met: the Curie temperature is 400-550 DEG C, the resistivity is 0.018 * 10 <-6 > omega.m to 0.25 * 10 <-6 > omega.m, and the saturation induction density is gt; and 1.4 T.