CN112456998A - Garnet ferrite material with high dielectric constant and preparation method thereof - Google Patents
Garnet ferrite material with high dielectric constant and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 45
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 40
- 239000002223 garnet Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims description 48
- 229910000831 Steel Inorganic materials 0.000 claims description 40
- 238000000498 ball milling Methods 0.000 claims description 40
- 239000010959 steel Substances 0.000 claims description 40
- 238000005245 sintering Methods 0.000 claims description 25
- 238000001035 drying Methods 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000002994 raw material Substances 0.000 claims description 21
- 239000008367 deionised water Substances 0.000 claims description 19
- 229910021641 deionized water Inorganic materials 0.000 claims description 19
- 239000002270 dispersing agent Substances 0.000 claims description 14
- 238000005469 granulation Methods 0.000 claims description 14
- 230000003179 granulation Effects 0.000 claims description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 8
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 239000011656 manganese carbonate Substances 0.000 claims description 5
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims 2
- 206010022971 Iron Deficiencies Diseases 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000005415 magnetization Effects 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 16
- 239000008188 pellet Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005350 ferromagnetic resonance Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
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Abstract
The invention discloses a garnet ferrite material with high dielectric constant and a preparation method thereof. The invention firstly provides a garnet ferrite material with high dielectric constant, the chemical formula of which is Y3‑a‑b‑(2c+d+e)GdaBibCa2c+d+ eVcZrdSneMnfAlgFe5‑c‑d‑e‑f‑g‑δO12，0≤a≤1.2，0.6≤b≤1.5，0≤c≤0.D is more than or equal to 0 and less than or equal to 0.7, e is more than or equal to 0 and less than or equal to 0.7, f is more than or equal to 0 and less than or equal to 0.15, g is more than or equal to 0 and less than or equal to 0.5, delta is more than or equal to 0 and less than or equal to 0.3, and delta is the iron content of the process. The invention further provides a preparation method of the material. The garnet ferrite material with high dielectric constant has the characteristics of narrow resonance line width delta H and excellent saturation magnetization Ms temperature, can effectively reduce the size of the central junction region of the microwave ring/isolator, and meets the requirement of miniaturization design of devices.
Description
Technical Field
The invention relates to the technical field of microwave ferrite materials. More particularly, it relates to a garnet ferrite material with high dielectric constant and a method for preparing the same.
Background
With the rapid development of microwave technology in recent years, in the core fields of aerospace, mobile communication and the like, the requirements of systems on miniaturization and light weight of components are more and more urgent, and as an important component in the systems, the volume of a microwave ferrite circulator/isolator is far larger than that of other components, and the miniaturization operation of the microwave ferrite circulator/isolator is obviously delayed. The dielectric constant epsilon of the ferrite material is a key index for realizing the miniaturization design of the circulator/isolator, and the larger the dielectric constant of the material is, the smaller the size of the circulator/isolator is.
The presently disclosed high dielectric constant garnet ferrite materials are less documented, and the chemical formula of the high dielectric constant garnet ferrite as described in CN107417266A is: bi3-(2a+b+c+m+n)Ca2a+b+c+m+nVaZrbSncIndTimGenFe5-a-b-c-d-m-n-δO12(ii) a The chemical formula of the garnet ferrite with high dielectric constant in CN102976740A is as follows: y is3-X’-2x-z-p-qBiX’Ca2x+z+p+ qVxGezInySnpTiqMnwAlw’Fe5-x-y-p-p-q-w-w’-δO12. The above-mentioned patents or in order to obtain narrow line widths Δ H, Bi3+The doping amount is very small, the dielectric constant epsilon' of the material is improved to a limited extent, and the material has no miniaturization potential; or doping Bi in large amount in pursuit of no rare earth addition3+The adoption of a large amount of octahedral nonmagnetic ions for substitution ensures that the temperature characteristics of the ferromagnetic resonance line width delta H and the saturation magnetization Ms cannot be considered, and the practicability is limited.
Therefore, there is a need for a garnet ferrite with a high dielectric constant, which has both a narrow resonance line width Δ H and an excellent saturation magnetization Ms temperature characteristic, so as to satisfy the urgent requirement of miniaturization of the whole system such as radar and communication base station.
Disclosure of Invention
An object of the present invention is to provide a garnet ferrite material having a high dielectric constant, which has both a narrow resonance line width Δ H and an excellent saturation magnetization Ms temperature characteristic.
Another object of the present invention is to provide a method for preparing the garnet ferrite material having a high dielectric constant.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a garnet ferrite material with high dielectric constant, which is of a garnet structure and has a chemical formula of Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12A is more than or equal to 0 and less than or equal to 1.2, b is more than or equal to 0.6 and less than or equal to 1.5, c is more than or equal to 0 and less than or equal to 0.6, d is more than or equal to 0 and less than or equal to 0.7, e is more than or equal to 0 and less than or equal to 0.7, f is more than or equal to 0 and less than or equal to 0.15, g is more than or equal to 0 and less than or equal to 0.
The invention also provides a preparation method of the garnet ferrite material with high dielectric constant, which comprises the following steps:
preparing materials: according to the chemical formula Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12A is more than or equal to 0 and less than or equal to 1.2, b is more than or equal to 0.6 and less than or equal to 1.5, c is more than or equal to 0 and less than or equal to 0.6, d is more than or equal to 0 and less than or equal to 0.7, e is more than or equal to 0 and less than or equal to 0.7, f is more than or equal to 0 and less than or equal to 0.15, g is more than or equal to 0 and less than or equal to 0.5, delta is more than or equal to 0.2O3、Gd2O3、Bi2O3、CaCO3、V2O5、ZrO2、SnO2、MnCO3、Al2O3、Fe2O3；
Primary ball milling: carrying out primary ball milling on the raw materials, the steel balls and the dispersing agent to obtain primary slurry;
primary drying: drying the primary slurry to obtain primary powder;
pre-burning: pre-burning the primary powder to obtain pre-burned primary powder;
secondary ball milling: adding steel balls and a dispersing agent into the presintered primary powder for secondary ball milling to obtain secondary slurry;
secondary drying: drying the secondary slurry to obtain secondary powder;
and (3) granulation: adding an adhesive into the secondary powder for granulation to obtain granules;
molding: pressing and forming the granules to obtain a pressed blank;
and (3) sintering: and sintering the green compact to obtain the garnet ferrite material with high dielectric constant.
In order to meet the requirement of miniaturization design of devices, the invention adopts Bi, Gd, Ca, V, Zr, Sn, Mn, Al and other elements to jointly replace when designing raw materials, and Gd element is doped to adjust the position of a counteracting point, thus the temperature stability of the resonance line width delta H and the saturation magnetization Ms is considered. Wherein a large amount of Bi is added3+The dielectric constant epsilon of the ferrite material is greatly improved, and the Curie temperature Tc of the ferrite material can be further improved, so that the balance between narrow resonance linewidth and temperature stability is achieved.
Further, the mass ratio of the total mass of the raw materials to the steel balls to the dispersant in the primary ball milling is 1: 2-4: 2, and the primary ball milling time is 24-32 hours; preferably, the dispersant is water; more preferably, the dispersant is deionized water.
Further, the pre-sintering temperature in the pre-sintering is 800-980 ℃ and the time is 3-5 h.
Further, the mass ratio of the pre-sintered primary powder, the steel balls and the dispersing agent in the secondary ball milling is 1: 2-4: 1.5, and the secondary ball milling time is 24-32 hours; preferably, the dispersant is water; more preferably, the dispersant is deionized water.
Furthermore, the adhesive in the granulation is a polyvinyl alcohol aqueous solution, and the addition amount of the adhesive is 10-18 wt% of the weight of the secondary powder.
Further, the pressure of the press molding in the molding is 1000kg/cm2～1600kg/cm2。
Further, the sintering temperature in the sintering is 950-1200 ℃, and the time is 4-6 h.
The invention has the following beneficial effects:
the garnet ferrite material with high dielectric constant has narrow resonance line width delta H and excellent saturation magnetization Ms temperature characteristic, the dielectric constant epsilon is more than or equal to 20, and the dielectric loss tan deltae≤5*10-4The resonance line width delta H is less than or equal to 6.0kA/m, and the Curie temperature Tc is more than or equal to 157 ℃. The garnet ferrite material with high dielectric constant can effectively reduce the size of the central junction region of the microwave ring/isolator and meet the requirement of miniaturization design of devices.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
Example 1 preparation method of garnet ferrite material with high dielectric constant
A garnet ferrite material with high dielectric constant has a garnet structure with a chemical formula of Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12Where a is 0, b is 1.5, c is 0, d is 0.4, e is 0.3, f is 0, g is 0, and δ is 0.3.
The preparation method comprises the following steps:
preparing materials: according to the formula Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12Wherein a is 0, b is 1.5, c is 0, d is 0.4, e is 0.3, f is 0, g is 0, and δ is 0.3, calculating and weighing each raw material; the raw material is Y2O3、Bi2O3、CaCO3、ZrO2、SnO2、Fe2O3。
Primary ball milling: and (2) loading the raw materials, the steel ball and the deionized water into a rolling ball mill, wherein the mass ratio of the total mass of the raw materials to the steel ball to the deionized water is 1:3:2, and performing rolling ball milling for 24 hours to obtain slurry.
Primary drying: and pouring the ground slurry after ball milling into a steel plate, and putting the steel plate into an oven for drying to obtain powder.
Pre-burning: and putting the dried powder into a crucible, putting the crucible into a bell jar furnace, and presintering in air atmosphere, wherein the presintering temperature is controlled to be 800 ℃ and the time is 4 hours, so as to obtain the presintering powder.
Secondary ball milling: and (3) putting the pre-sintered powder, the steel ball and the deionized water into a rolling ball mill, wherein the mass ratio of the powder to the steel ball to the deionized water is 1:3:1.5, and performing rolling ball milling for 24 hours to obtain slurry.
Secondary drying: and pouring the ground slurry after ball milling into a steel plate, and putting the steel plate into an oven for drying to obtain powder.
And (3) granulation: an aqueous solution of polyvinyl alcohol (16 wt% of the weight of the powder) was added to the powder to conduct granulation, to obtain pellets.
Molding: placing the granulated granules into a die, and pressing and forming into a corresponding pressed blank by a press at a pressure of 1400kg/cm2And obtaining a green compact.
And (3) sintering: and (3) putting the green compact into a sagger, putting the sagger into a bell jar furnace, sintering in the air atmosphere at the sintering temperature of 950 ℃ for 4 hours, and finally obtaining the garnet ferrite material.
Specific performance parameters are shown in table 1.
Example 2 preparation method of garnet ferrite material with high dielectric constant
A garnet ferrite material with high dielectric constant has a garnet structure with a chemical formula of Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12Where a is 0.7, b is 1.2, c is 0.2, d is 0.7, e is 0, f is 0.15, g is 0.1, and δ is 0.2.
The preparation method comprises the following steps:
preparing materials: according to the formula Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12Wherein a is 0.7, b is 1.2, c is 0.2, d is 0.7, e is 0, f is 0.15, g is 0.1, and δ is 0.2, calculating and weighing each raw material, wherein the raw material is Gd2O3、Bi2O3、CaCO3、V2O5、ZrO2、MnCO3、Al2O3、Fe2O3。
Primary ball milling: and (2) loading the raw materials, the steel ball and the deionized water into a rolling ball mill, wherein the mass ratio of the total mass of the raw materials to the steel ball to the deionized water is 1:2:2, and performing rolling ball milling for 28 hours to obtain slurry.
Primary drying: and pouring the ground slurry after ball milling into a steel plate, and putting the steel plate into an oven for drying to obtain powder.
Pre-burning: and (3) putting the dried powder into a crucible, putting the crucible into a bell jar furnace, and presintering in air atmosphere, wherein the presintering temperature is controlled to be 820 ℃ and the time is 3 hours, so as to obtain the presintering powder.
Secondary ball milling: putting the pre-sintered powder, the steel ball and the deionized water into a rolling ball mill, wherein the mass ratio of the powder to the steel ball to the deionized water is 1:2:1.5, and performing rolling ball milling for 28 hours to obtain slurry
Secondary drying: and pouring the ground slurry after ball milling into a steel plate, and putting the steel plate into an oven for drying to obtain powder.
And (3) granulation: an aqueous solution of polyvinyl alcohol (the weight of which was 10% by weight of the powder) was added to the powder to conduct granulation, to obtain pellets.
Molding: placing the granulated granules into a designated die, and pressing and forming into corresponding pressed blank with a press at a pressure of 1000kg/cm2And obtaining a green compact.
And (3) sintering: and (3) putting the green compact into a sagger, putting the sagger into a bell jar furnace, sintering in the air atmosphere at the sintering temperature of 1000 ℃, and keeping the temperature for 6 hours to finally obtain the garnet ferrite material.
Specific performance parameters are shown in table 1.
Example 3 preparation method of garnet ferrite material with high dielectric constant
High dielectric constant garnet ferrite material and garnet structureOf the formula Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12Where a is 1.2, b is 0.6, c is 0, d is 0.5, e is 0, f is 0.1, g is 0.5, and δ is 0.25.
The preparation method comprises the following steps:
preparing materials: according to the formula Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12Wherein a is 1.2, b is 0.6, c is 0, d is 0.5, e is 0, f is 0.1, g is 0.5, and δ is 0.25, calculating and weighing each raw material, wherein the raw material is Y2O3、Gd2O3、Bi2O3、CaCO3、ZrO2、MnCO3、Al2O3、Fe2O3；
Primary ball milling: and (2) loading the raw materials, the steel ball and the deionized water into a rolling ball mill, wherein the mass ratio of the total mass of the raw materials to the steel ball to the deionized water is 1:4:2, and performing rolling ball milling for 32 hours to obtain slurry.
Primary drying: and pouring the ground slurry after ball milling into a steel plate, and putting the steel plate into an oven for drying to obtain powder.
Pre-burning: and putting the dried powder into a crucible, putting the crucible into a bell jar furnace, and presintering the crucible in the air atmosphere, wherein the presintering temperature is controlled to be 980 ℃ and the presintering time is 5 hours, so as to obtain the presintering powder.
Secondary ball milling: putting the pre-sintered powder, the steel ball and the deionized water into a rolling ball mill, wherein the mass ratio of the powder to the steel ball to the deionized water is 1:4:1.5, and performing rolling ball milling for 32 hours to obtain slurry
Secondary drying: and pouring the ground slurry after ball milling into a steel plate, and putting the steel plate into an oven for drying to obtain powder.
And (3) granulation: an aqueous solution of polyvinyl alcohol (the weight of which was 18% by weight of the powder) was added to the powder to conduct granulation, to obtain pellets.
Molding: placing the granulated granules into a specified die, and pressing by using a pressForming into corresponding green compact with a compression molding pressure of 1600kg/cm2And obtaining a green compact.
And (3) sintering: and (3) putting the green compact into a sagger, putting the sagger into a bell jar furnace, sintering in the air atmosphere at the sintering temperature of 1200 ℃, and preserving heat for 5 hours to finally obtain the garnet ferrite material.
Specific performance parameters are shown in table 1.
Example 4 preparation method of garnet ferrite material with high dielectric constant
A garnet ferrite material with high dielectric constant has a garnet structure with a chemical formula of Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12Where a is 0, b is 1.1, c is 0.6, d is 0, e is 0.7, f is 0.1, g is 0, and δ is 0.2.
The preparation method comprises the following steps:
preparing materials: chemical formula Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12Wherein a is 0, b is 1.1, c is 0.6, d is 0, e is 0.7, f is 0.1, g is 0, and δ is 0.2, calculating and weighing each raw material, wherein the raw material is Bi2O3、CaCO3、V2O5、SnO2、MnCO3、Fe2O3；
Primary ball milling: and (2) loading the raw materials, the steel ball and the deionized water into a rolling ball mill, wherein the mass ratio of the total mass of the raw materials to the steel ball to the deionized water is 1:4:2, and performing rolling ball milling for 24 hours to obtain slurry.
Primary drying: and pouring the ground slurry after ball milling into a steel plate, and putting the steel plate into an oven for drying to obtain powder.
Pre-burning: and putting the dried powder into a crucible, putting the crucible into a bell jar furnace, and presintering in air atmosphere, wherein the presintering temperature is controlled to be 850 ℃ and the time is 5 hours, so as to obtain the presintering powder.
Secondary ball milling: putting the pre-sintered powder, the steel ball and the deionized water into a rolling ball mill, wherein the mass ratio of the powder to the steel ball to the deionized water is 1:4:1.5, and performing rolling ball milling for 32 hours to obtain slurry
Secondary drying: and pouring the ground slurry after ball milling into a steel plate, and putting the steel plate into an oven for drying to obtain powder.
And (3) granulation: an aqueous solution of polyvinyl alcohol (the weight of which was 18% by weight of the powder) was added to the powder to conduct granulation, to obtain pellets.
Molding: placing the granulated granules into a designated die, and pressing and forming into corresponding pressed blank with a press at a pressure of 1600kg/cm2And obtaining a green compact.
And (3) sintering: and (3) putting the green compact into a sagger, putting the sagger into a bell jar furnace, sintering in the air atmosphere at the sintering temperature of 1000 ℃, and keeping the temperature for 5 hours to finally obtain the garnet ferrite material.
Specific performance parameters are shown in table 1.
TABLE 1 EXAMPLES 1-4 Properties of high dielectric constant garnet ferrite materials
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A garnet ferrite material having a high dielectric constant, characterized in that the garnet ferrite material has the chemical formula of Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12，0≤a≤1.2，0.6B is not less than 1.5, c is not less than 0 and not more than 0.6, d is not less than 0 and not more than 0.7, e is not less than 0 and not more than 0.7, f is not less than 0 and not more than 0.15, g is not less than 0 and not more than 0.5, delta is not less than 0 and not more than 0.3, and delta is the iron deficiency of the process.
2. A method of preparing the garnet ferrite material of claim 1, comprising the steps of:
preparing materials: according to the chemical formula Y3-a-b-(2c+d+e)GdaBibCa2c+d+eVcZrdSneMnfAlgFe5-c-d-e-f-g-δO12A is more than or equal to 0 and less than or equal to 1.2, b is more than or equal to 0.6 and less than or equal to 1.5, c is more than or equal to 0 and less than or equal to 0.6, d is more than or equal to 0 and less than or equal to 0.7, e is more than or equal to 0 and less than or equal to 0.7, f is more than or equal to 0 and less than or equal to 0.15, g is more than or equal to 0 and less than or equal to 0.5, delta is more than or equal to 0.2O3、Gd2O3、Bi2O3、CaCO3、V2O5、ZrO2、SnO2、MnCO3、Al2O3、Fe2O3；
Primary ball milling: carrying out primary ball milling on the raw materials, the steel balls and the dispersing agent to obtain primary slurry;
primary drying: drying the primary slurry to obtain primary powder;
pre-burning: pre-burning the primary powder to obtain pre-burned primary powder;
secondary ball milling: adding steel balls and a dispersing agent into the presintered primary powder for secondary ball milling to obtain secondary slurry;
secondary drying: drying the secondary slurry to obtain secondary powder;
and (3) granulation: adding an adhesive into the secondary powder for granulation to obtain granules;
molding: pressing and forming the granules to obtain a pressed blank;
and (3) sintering: and sintering the green compact to obtain the garnet ferrite material with high dielectric constant.
3. The preparation method according to claim 2, wherein in the primary ball milling, the mass ratio of the total mass of the raw materials to the steel balls to the dispersant is 1: 2-4: 2; preferably, the time of the primary ball milling is 24-32 h.
4. The preparation method according to claim 2, wherein the pre-sintering temperature in the pre-sintering is 800 ℃ to 980 ℃ and the time is 3h to 5 h.
5. The preparation method of claim 2, wherein the mass ratio of the primary powder, the steel balls and the dispersing agent after the pre-sintering in the secondary ball milling is 1: 2-4: 1.5; preferably, the time of the secondary ball milling is 24-32 h.
6. The method according to claim 3 or 5, wherein the dispersant is water; preferably, the dispersant is deionized water.
7. The method according to claim 2, wherein the binder used in the granulation is an aqueous solution of polyvinyl alcohol.
8. The method according to claim 2, wherein the binder is added in an amount of 10 to 18 wt% based on the weight of the secondary powder.
9. The production method according to claim 2, wherein the pressure of press molding in the molding is 1000kg/cm2～1600kg/cm2。
10. The preparation method according to claim 2, wherein the sintering temperature in the sintering is 950-1200 ℃ and the time is 4-6 h.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113735575A (en) * | 2021-09-07 | 2021-12-03 | 山西新睿磁性技术有限公司 | Gyromagnetic ferrite powder, gyromagnetic ferrite magnetic core and preparation method of gyromagnetic ferrite magnetic core |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011073937A (en) * | 2009-09-30 | 2011-04-14 | Hitachi Metals Ltd | Polycrystal magnetic ceramic, microwave magnetic substance, and irreversible circuit element using the same |
| CN102976740A (en) * | 2012-11-14 | 2013-03-20 | 东阳富仕特磁业有限公司 | Production method of garnet microwave ferrite with narrow line width and high dielectric constant |
| CN104446429A (en) * | 2013-09-20 | 2015-03-25 | 天工方案公司 | Materials, devices and methods related to below-resonance radio-frequency circulators and isolators |
| US20160362341A1 (en) * | 2015-06-15 | 2016-12-15 | Skyworks Solutions, Inc. | Ultra-high dielectric constant garnet |
| CN109867518A (en) * | 2019-03-27 | 2019-06-11 | 电子科技大学 | A kind of ferrogarnet of high-temperature stability and preparation method thereof |
| CN111187064A (en) * | 2020-01-13 | 2020-05-22 | 横店集团东磁股份有限公司 | High-stability garnet microwave ferrite magnetic sheet and preparation method thereof |
-
2020
- 2020-10-28 CN CN202011169827.7A patent/CN112456998A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011073937A (en) * | 2009-09-30 | 2011-04-14 | Hitachi Metals Ltd | Polycrystal magnetic ceramic, microwave magnetic substance, and irreversible circuit element using the same |
| CN102976740A (en) * | 2012-11-14 | 2013-03-20 | 东阳富仕特磁业有限公司 | Production method of garnet microwave ferrite with narrow line width and high dielectric constant |
| CN104446429A (en) * | 2013-09-20 | 2015-03-25 | 天工方案公司 | Materials, devices and methods related to below-resonance radio-frequency circulators and isolators |
| US20160362341A1 (en) * | 2015-06-15 | 2016-12-15 | Skyworks Solutions, Inc. | Ultra-high dielectric constant garnet |
| CN109867518A (en) * | 2019-03-27 | 2019-06-11 | 电子科技大学 | A kind of ferrogarnet of high-temperature stability and preparation method thereof |
| CN111187064A (en) * | 2020-01-13 | 2020-05-22 | 横店集团东磁股份有限公司 | High-stability garnet microwave ferrite magnetic sheet and preparation method thereof |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022165905A1 (en) * | 2021-02-07 | 2022-08-11 | 西安交通大学 | Intercalation-containing graphene/silicon schottky junction photodetector and manufacturing process |
| CN113735575A (en) * | 2021-09-07 | 2021-12-03 | 山西新睿磁性技术有限公司 | Gyromagnetic ferrite powder, gyromagnetic ferrite magnetic core and preparation method of gyromagnetic ferrite magnetic core |
| CN115385680A (en) * | 2022-09-14 | 2022-11-25 | 电子科技大学 | High-dielectric-width and low-linewidth microwave gyromagnetic ferrite material and preparation method thereof |
| CN116514535B (en) * | 2023-04-13 | 2024-06-14 | 电子科技大学 | Garnet ferrite material with high dielectric and low linewidth, preparation method and microstrip circulator |
| CN116621571A (en) * | 2023-04-13 | 2023-08-22 | 电子科技大学 | Microwave ferrite material, preparation method and dielectric constant adjusting method |
| CN116621571B (en) * | 2023-04-13 | 2024-04-02 | 电子科技大学 | Microwave ferrite material, preparation method and dielectric constant adjusting method |
| CN116514535A (en) * | 2023-04-13 | 2023-08-01 | 电子科技大学 | Garnet ferrite material with high dielectric and low linewidth, preparation method and microstrip circulator |
| WO2024230141A1 (en) * | 2023-05-11 | 2024-11-14 | 深圳市华扬通信技术有限公司 | Low-temperature sintered high-dielectric gyromagnetic ferrite material and preparation method therefor |
| CN116813322A (en) * | 2023-06-27 | 2023-09-29 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | High dielectric constant torque ferrite material and preparation method thereof |
| CN116854460A (en) * | 2023-07-31 | 2023-10-10 | 东阳富仕特磁业有限公司 | Microwave ferrite material with high dielectric constant, high Curie temperature and low loss and preparation method thereof |
| WO2025049661A1 (en) * | 2023-08-31 | 2025-03-06 | Allumax Tti, Llc | Temperature compensated high dielectric constant ferrites containing gadolinium and bismuth |
| CN118026662A (en) * | 2024-01-24 | 2024-05-14 | 东阳富仕特磁业有限公司 | High-performance microwave ferrite material and preparation method thereof |
| CN118026662B (en) * | 2024-01-24 | 2024-08-30 | 东阳富仕特磁业有限公司 | High-performance microwave ferrite material and preparation method thereof |
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