CN112341168A - Rare earth doped zinc-gallium-aluminum oxide powder and preparation method thereof - Google Patents

Rare earth doped zinc-gallium-aluminum oxide powder and preparation method thereof Download PDF

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CN112341168A
CN112341168A CN202011005236.6A CN202011005236A CN112341168A CN 112341168 A CN112341168 A CN 112341168A CN 202011005236 A CN202011005236 A CN 202011005236A CN 112341168 A CN112341168 A CN 112341168A
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rare earth
oxide
gallium
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aluminum oxide
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张莉兰
罗洋
钟小华
邵学亮
童培云
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Vital Thin Film Materials Guangdong Co Ltd
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Abstract

The invention discloses a preparation method of rare earth doped zinc-gallium-aluminum oxide powder, which comprises the following steps: sequentially adding rare earth oxide, zinc oxide, a dispersing agent and pure water into a mixing barrel for pre-dispersing to obtain a first mixed solution, and grinding the first mixed solution to obtain a first mixed slurry; sequentially adding gallium oxide, a dispersing agent and pure water into the first mixed slurry for pre-dispersing to obtain a second mixed solution, and grinding the second mixed solution to obtain a second mixed slurry; sequentially adding alumina and a dispersant into the second mixed slurry for pre-dispersion to obtain a third mixed solution, and grinding the third mixed solution to obtain a third mixed slurry; adding a binder into the third mixed slurry to obtain a fourth mixed solution, and grinding the fourth mixed solution to obtain a fourth mixed slurry; and granulating, mixing and screening the fourth mixed slurry to obtain the rare earth doped zinc-gallium-aluminum oxide powder. The method can solve the problem of non-uniform components caused by doping the rare earth elements with large particle sizes into the zinc-gallium-aluminum powder.

Description

Rare earth doped zinc-gallium-aluminum oxide powder and preparation method thereof
Technical Field
The invention relates to the field of preparation of zinc-gallium-aluminum oxide powder, in particular to rare earth doped zinc-gallium-aluminum oxide powder and a preparation method thereof.
Background
The rare earth ion doped material is formed by doping rare earth ions into an inorganic solid material matrix, so that the original luminescence property is enhanced, and the rare earth ions have extremely wide application due to the unique physical and chemical properties of rare earth elements. The rare earth element has the characteristics of unique 4f electronic structure, large atomic magnetic moment, strong spin-orbit coupling and the like, when the rare earth element forms a rare earth complex with other elements, the coordination number can be changed between 3 and 12, and the crystal structure of the rare earth compound is diversified. In the field of new materials, the optical, electrical and magnetic properties of rare earth elements are widely applied. At present, the rare earth doped fluorescent material is widely applied to color television picture tubes, energy-saving lamps, agricultural light conversion films, military displays and the like, and has good economic and social values. The rare earth nano material and the application thereof become a hot spot at present, and the reason is that the material integrates the rare earth characteristic and the nano characteristic, so that comprehensive excellent characteristics which are not possessed by non-rare earth materials and non-nano materials are inevitably created, and the application prospect is huge.
However, the radius (mostly 80-100 pm) and valence (mostly 3-or 4-valent) of the rare earth ions are greatly different from those of the doped ions, and the melting point is high, so how to perform effective doping in the rare earth ion doped material with complex components is a problem to be solved in the field.
Aiming at the defects of the prior art, the invention provides rare earth doped zinc-gallium-aluminum oxide powder and a preparation method thereof.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides rare earth doped zinc-gallium-aluminum oxide powder and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme.
S1: and sequentially adding rare earth oxide, zinc oxide, a first dispersing agent and pure water into a mixing barrel, pre-dispersing for a first preset time period to obtain a first mixed solution, and grinding the first mixed solution for a second preset time period to obtain a first mixed slurry.
S2: and sequentially adding gallium oxide, a second dispersing agent and pure water into the first mixed slurry in the mixing barrel, pre-dispersing for a third preset time period to obtain a second mixed solution, and grinding the second mixed solution for a fourth preset time period to obtain a second mixed slurry.
S3: and sequentially adding alumina and a third dispersing agent into the second mixed slurry in the mixing barrel, pre-dispersing for a fifth preset time period to obtain a third mixed solution, and grinding the third mixed solution for a sixth preset time period to obtain a third mixed slurry.
S4: and adding a binder into the third mixed slurry in the mixing barrel to obtain a fourth mixed solution, and grinding the fourth mixed solution for a seventh preset time period to obtain a fourth mixed slurry.
S5: and granulating, mixing and screening the fourth mixed slurry to finally obtain the rare earth doped zinc-gallium-aluminum oxide powder.
As a further improvement of the invention, the mass ratio of the rare earth oxide to the zinc oxide to the gallium oxide to the aluminum oxide is 1: (1.5-2), (2.5-3) and (4.5-5).
As a further improvement of the invention, the first preset time period is between 30 and 60min, the second preset time period is between 50 and 200min, the third preset time period is between 15 and 40min, the fourth preset time period is between 150 and 250min, the fifth preset time period is between 45 and 90min, the sixth preset time period is between 200 and 400min, and the seventh preset time period is between 400 and 800 min.
In a further improvement of the invention, the first dispersant accounts for 3-15% of the total solid mass of the rare earth oxide, the zinc oxide and the first dispersant, the second dispersant accounts for 3-15% of the total solid mass of the gallium oxide and the second dispersant, and the third dispersant accounts for 3-15% of the total solid mass of the aluminum oxide and the third dispersant.
As a further improvement of the present invention, the first dispersant, the second dispersant and the third dispersant are all anionic wetting dispersants.
As a further improvement of the invention, the binder accounts for 3-5% of the total mass of the rare earth oxide, the zinc oxide, the gallium oxide, the aluminum oxide and the binder.
As a further improvement of the present invention, the binder is at least one of polymethacrylic acid and polyvinyl alcohol.
The invention also provides rare earth doped zinc-gallium-aluminum oxide powder, which has the chemical formula as follows: al (Al)1.5(GaxRe1-x)Zn0.677O4Wherein Re represents rare earth elements, and X is between 0.8 and 0.9.
As a further improvement of the invention, the Re represents one of La, Ce, Pr, Nd and Y.
According to the rare earth doped zinc-gallium-aluminum oxide powder and the preparation method thereof, the auxiliary agent is added into the mixed slurry, and under the action of the auxiliary agent, the problem of non-uniform components caused by doping large-particle-size rare earth elements into the zinc-gallium-aluminum oxide powder is solved through a step-by-step grinding mode, the rare earth doped zinc-gallium-aluminum oxide powder with uniform components can be prepared, and the rare earth doped zinc-gallium-aluminum oxide target material with high density, uniform structure and excellent photoelectric characteristics can be prepared by applying the zinc-gallium-aluminum oxide powder.
Description of the drawings:
FIG. 1 is a scanning electron microscope image of the rare earth doped zinc gallium aluminum oxide powder prepared in example 1 of the present invention.
FIG. 2 is a particle size distribution and BET data image of the rare earth-doped zinc gallium aluminum oxide powder prepared in example 1 of the present invention.
Detailed Description
The technical solutions will be described clearly and completely in the following with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides rare earth doped zinc-gallium-aluminum oxide powder and a preparation method thereof, wherein the preparation method comprises the following steps:
s1: and sequentially adding rare earth oxide, zinc oxide, a first dispersing agent and pure water into the mixing barrel, pre-dispersing for a first preset time period to obtain a first mixed solution, and grinding the first mixed solution for a second preset time period to obtain a first mixed slurry.
In certain embodiments of the present invention, the first grinding is required because the grinding requirements are relatively high due to the relatively large size of the two oxide particles, rare earth oxide and zinc oxide (ZnO).
The first dispersing agent is an anionic wetting dispersing agent, the first dispersing agent is preferably sodium oleate, the pre-dispersion duration time is 30-60 min, the dispersion mode is ultrasonic dispersion, the first dispersing agent accounts for 3-15% of the total mass of the rare earth oxide, the zinc oxide and the first dispersing agent, the grinding equipment for the pre-dispersed first mixed solution is a sand mill, after the pre-dispersion is carried out for a preset time, the pre-dispersed solution is injected into the sand mill by a pneumatic diaphragm pump for circulation, the diameter of a zirconium ball used in the sand mill is 0.2-2 mm, the grinding rotating speed is 400-1500 r/min, and the grinding time is 50-200 min.
S2: and sequentially adding gallium oxide, a second dispersing agent and pure water into the first mixed slurry in the mixing barrel, pre-dispersing for a third preset time period to obtain a second mixed solution, and grinding the second mixed solution for a fourth preset time period to obtain a second mixed slurry.
In this embodiment, since the rare earth oxide and the zinc oxide (ZnO) need to be doped into gallium oxide (Ga) together2O3) In the unit cell, so gallium oxide (Ga)2O3) Grinding in the middle is required.
The first dispersing agent is an anionic wetting dispersing agent, the first dispersing agent is preferably sodium oleate, the pre-dispersion duration time is 15-40 min, the dispersion mode is ultrasonic dispersion, the first dispersing agent accounts for 3-15% of the total mass of the rare earth oxide, the zinc oxide and the first dispersing agent, the grinding equipment of the pre-dispersed first mixed solution is a sand mill, after the pre-dispersion is carried out for a preset time, the pre-dispersed solution is injected into the sand mill by a pneumatic diaphragm pump for circulation, the diameter of a zirconium ball used in the sand mill is 0.2-2 mm, the grinding rotating speed is 400-1500 r/min, and the grinding time is 150-250 min.
S3: and sequentially adding alumina and a third dispersing agent into the second mixed slurry in the mixing barrel, pre-dispersing for a fifth preset time period to obtain a third mixed solution, and grinding the third mixed solution for a sixth preset time period to obtain a third mixed slurry.
In certain embodiments of the present invention, the aluminum oxide (Al)2O3) Small size of particles, Al3+Radius and Ga3+Relatively close, easy to mix, and less demanding for grinding, so it is necessary to grind at the end.
The first dispersing agent is an anionic wetting dispersing agent, the first dispersing agent is preferably sodium oleate, the pre-dispersion duration time is 45-90 min, the dispersion mode is ultrasonic dispersion, the first dispersing agent accounts for 3-15% of the total mass of the rare earth oxide, the zinc oxide and the first dispersing agent, the grinding equipment for the pre-dispersed first mixed solution is a sand mill, after the pre-dispersion is carried out for a preset time, the pre-dispersed solution is injected into the sand mill by a pneumatic diaphragm pump for circulation, the diameter of a zirconium ball used in the sand mill is 0.2-2 mm, the grinding rotating speed is 400-1500 r/min, and the grinding time is 200-400 min.
The main reason for setting the milling sequence is to consider the difficulty of doping various metal ions and the difference of the oxide particle size.
S4: and adding a binder into the third mixed slurry in the mixing barrel to obtain a fourth mixed solution, and grinding the fourth mixed solution for a seventh preset time period to obtain a fourth mixed slurry.
In this embodiment, the grinding equipment used for at least one of polymethacrylic acid and polyvinyl alcohol is a sand mill, the diameter of zirconium balls used in the sand mill is between 0.2mm and 2mm, the grinding speed is between 500r/min and 2000r/min, and the grinding time is between 400min and 800 min.
S5: and granulating, mixing and screening the fourth mixed slurry to finally obtain the rare earth doped zinc-gallium-aluminum oxide powder.
In some embodiments of the invention, the granulation equipment is a parallel flow spray drying tower, the moisture and size of the material are adjusted by adjusting the air outlet temperature of the drying tower, the material is mixed by a spiral mixer, and finally the rare earth doped zinc-gallium-aluminum oxide powder is obtained by screening by an ultrasonic vibration screen.
It should be noted that the purity of the rare earth oxide is 4N, the particle size is 100-200 nm, the purity of the zinc oxide is 4N, the particle size is 100-200 nm, the purity of the gallium oxide is 4N, the particle size is 300-400 nm, the purity of the aluminum oxide is 4N, the particle size is 50-100 nm, and the mass ratio of the rare earth oxide to the zinc oxide to the gallium oxide to the aluminum oxide is 1: (1.5-2): (2.5-3): 4.5-5), the binder accounts for 3-5% of the total mass of rare earth oxide, zinc oxide, gallium oxide, aluminum oxide and the binder solid.
According to the second aspect of the present invention, there is also provided a rare earth-doped zinc-gallium-aluminum oxide powder prepared by the above method, wherein the rare earth-doped zinc-gallium-aluminum oxide powder has a chemical formula: al (Al)1.5(GaxRe1-x)Zn0.677O4Wherein Re represents rare earth elements, X is between 0.8 and 0.9, and Re represents one of La, Ce, Pr, Nd and Y.
For further understanding of the present invention, the method and effects of the present invention will be described in further detail with reference to specific examples. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1.
With lanthanum oxide (La)2O3) The preparation method of the rare earth doped zinc-gallium-aluminum oxide powder comprises the following steps.
(1) Weighing and proportioning materials according to a mass ratio of 1: lanthanum oxide, zinc oxide, gallium oxide and aluminum oxide were weighed at a ratio of 1.7:2.7:4.8, and binder polymethacrylic acid was weighed at 4% of the total mass of lanthanum oxide, zinc oxide, gallium oxide, aluminum oxide and binder solids.
(2) And (3) adding pure water, a dispersing agent sodium oleate, zinc oxide and lanthanum oxide into the first mixing barrel in sequence for pre-dispersing for 45min, wherein the dispersing agent accounts for 10% of the total mass of the rare earth oxide, the zinc oxide and the dispersing agent. Pumping the pre-dispersed solution into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 0.2 mm), wherein the grinding speed is 1800r/min, and the grinding time is 125min, so as to obtain first mixed slurry.
(3) And adding pure water, a dispersing agent sodium oleate and gallium oxide into the second mixing barrel in sequence for pre-dispersion for 28min, wherein the dispersing agent accounts for 10% of the total mass of the dispersing agent, the gallium oxide and other solids. And adding the pre-dispersed solution into the first mixed slurry, pumping the solution into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 0.2 mm), wherein the grinding speed is 1800r/min, and the grinding time is 200min, so as to obtain second mixed slurry.
(4) And (3) adding pure water, a dispersing agent sodium oleate and alumina into the third mixing barrel in sequence for pre-dispersing for 68min, wherein the dispersing agent accounts for 10% of the total mass of the dispersing agent, the alumina and other solids. And adding the pre-dispersed solution into the second mixed slurry, pumping into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 0.2 mm), wherein the grinding speed is 1800r/min, and the grinding time is 300min, so as to obtain a third mixed slurry.
(5) And sequentially adding the adhesive into the third mixed slurry, pumping into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 0.2 mm), wherein the grinding speed is 1800r/min, and the grinding time is 600min, so as to obtain a fourth mixed slurry.
(6) The fourth mixed slurry is injected into a parallel flow type spray drying tower for granulation, and then the materials are mixed and screened to obtain the material with the theoretical chemical formula of Al1.5(Ga0.85La0.15)Zn0.67O4The average particle diameter of the powder of (1) was 83 μm, fig. 1 is a scanning electron microscope image of the powder, it can be seen from fig. 1 that the powder obtained was a uniformly distributed powder, and fig. 2 is a particle size distribution and BET data image of the powder.
Example 2.
With cerium oxide (CeO)2) The preparation method of the rare earth doped zinc-gallium-aluminum oxide powder comprises the following steps.
(1) Weighing and proportioning materials according to a mass ratio of 1: cerium oxide, zinc oxide, gallium oxide and aluminum oxide were weighed at a ratio of 1.5:2.5:4.5, and 3% binder polyvinyl alcohol based on the total mass of cerium oxide, zinc oxide, gallium oxide, aluminum oxide and binder solids was weighed.
(2) And (3) adding pure water, a dispersing agent sodium oleate, zinc oxide and lanthanum oxide into the first mixing barrel in sequence for pre-dispersion for 30min, wherein the dispersing agent accounts for 4% of the total mass of the rare earth oxide, the zinc oxide and the dispersing agent. Pumping the pre-dispersed solution into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 1.5 mm), wherein the grinding speed is 800r/min, and the grinding time is 50min, so as to obtain first mixed slurry.
(3) And adding pure water, a dispersing agent sodium oleate and gallium oxide into the second mixing barrel in sequence for pre-dispersing for 15min, wherein the dispersing agent accounts for 4% of the total mass of the dispersing agent, the gallium oxide and other solids. And adding the pre-dispersed solution into the first mixed slurry, pumping the solution into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 1.5 mm), wherein the grinding speed is 800r/min, and the grinding time is 150min, so as to obtain second mixed slurry.
(4) And (3) adding pure water, a dispersing agent sodium oleate and alumina into the third mixing barrel in sequence for pre-dispersing for 45min, wherein the dispersing agent accounts for 4% of the total mass of the dispersing agent, the alumina and other solids. And adding the pre-dispersed solution into the second mixed slurry, pumping into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 1.5 mm), wherein the grinding speed is 800r/min, and the grinding time is 200min, so as to obtain a third mixed slurry.
(5) And sequentially adding the adhesive into the third mixed slurry, pumping into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 1.5 mm), wherein the grinding speed is 800r/min, and the grinding time is 400min, so as to obtain a fourth mixed slurry.
(6) The fourth mixed slurry is injected into a parallel flow type spray drying tower for granulation, and then enters the towerMixing and screening to obtain Al as a theoretical chemical formula1.5(Ga0.8Ce0.2)Zn0.67O4The powder of (4), wherein the average particle diameter of the powder is 110. mu.m.
Example 3.
By praseodymium (Pr) oxide6O11) The preparation method of the rare earth doped zinc-gallium-aluminum oxide powder comprises the following steps.
(1) Weighing and proportioning materials according to a mass ratio of 1: praseodymium oxide, zinc oxide, gallium oxide and aluminum oxide were weighed at a ratio of 2:3:5, and binders polymethacrylic acid and polyvinyl alcohol, which account for 5% of the total mass of praseodymium oxide, zinc oxide, gallium oxide, aluminum oxide and binder solids, were weighed.
(2) And (3) adding pure water, a dispersing agent sodium oleate, zinc oxide and lanthanum oxide into the first mixing barrel in sequence for pre-dispersing for 60min, wherein the dispersing agent accounts for 15% of the total mass of the rare earth oxide, the zinc oxide and the dispersing agent. Pumping the pre-dispersed solution into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 0.8 mm), wherein the grinding speed is 1000r/min, and the grinding time is 200min, so as to obtain first mixed slurry.
(3) And adding pure water, a dispersing agent sodium oleate and gallium oxide into the second mixing barrel in sequence for pre-dispersion for 40min, wherein the dispersing agent accounts for 15% of the total mass of the dispersing agent, the gallium oxide and other solids. And adding the pre-dispersed solution into the first mixed slurry, pumping the solution into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 0.8 mm), wherein the grinding speed is 1000r/min, and the grinding time is 250min, so as to obtain second mixed slurry.
(4) And (3) adding pure water, a dispersing agent sodium oleate and alumina into the third mixing barrel in sequence for pre-dispersing for 90min, wherein the dispersing agent accounts for 15% of the total mass of the dispersing agent, the alumina and other solids. And adding the pre-dispersed solution into the second mixed slurry, pumping into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 0.8 mm), wherein the grinding speed is 1000r/min, and the grinding time is 400min, so as to obtain a third mixed slurry.
(5) And sequentially adding the adhesive into the third mixed slurry, pumping into a sand mill by using a pneumatic diaphragm pump for circulation (using zirconium balls with the diameter of 0.8 mm), wherein the grinding speed is 1000r/min, and the grinding time is 800min, so as to obtain a fourth mixed slurry.
(6) The fourth mixed slurry is injected into a parallel flow type spray drying tower for granulation, and then the materials are mixed and screened to obtain the material with the theoretical chemical formula of Al1.5(Ga0.9Pr0.1)Zn0.67O4The powder of (4), wherein the average particle diameter of the powder is 95 μm.
According to the rare earth doped zinc-gallium-aluminum oxide powder and the preparation method thereof, the auxiliary agent is added into the mixed slurry, and under the action of the auxiliary agent, the problem of non-uniform components caused by doping large-particle-size rare earth elements into the zinc-gallium-aluminum oxide powder is solved through a step-by-step grinding mode, the rare earth doped zinc-gallium-aluminum oxide powder with uniform components can be prepared, and the rare earth doped zinc-gallium-aluminum oxide target material with high density, uniform tissue and excellent photoelectric characteristics can be prepared by specifically applying the zinc-gallium-aluminum oxide powder.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims (10)

1. A preparation method of rare earth doped zinc-gallium-aluminum oxide powder is characterized by comprising the following steps:
s1: sequentially adding rare earth oxide, zinc oxide, a first dispersing agent and pure water into a mixing barrel, pre-dispersing for a first preset time period to obtain a first mixed solution, and grinding the first mixed solution for a second preset time period to obtain a first mixed slurry;
s2: sequentially adding gallium oxide, a second dispersing agent and pure water into the first mixed slurry in the mixing barrel, pre-dispersing for a third preset time period to obtain a second mixed solution, and grinding the second mixed solution for a fourth preset time period to obtain a second mixed slurry;
s3: sequentially adding alumina and a third dispersing agent into the second mixed slurry in the mixing barrel, pre-dispersing for a fifth preset time period to obtain a third mixed solution, and grinding the third mixed solution for a sixth preset time period to obtain a third mixed slurry;
s4: adding a binder into the third mixed slurry in the mixing barrel to obtain a fourth mixed solution, and grinding the fourth mixed solution for a seventh preset time period to obtain a fourth mixed slurry;
s5: and granulating, mixing and screening the fourth mixed slurry to finally obtain the rare earth doped zinc-gallium-aluminum oxide powder.
2. The method for preparing rare earth doped zinc gallium aluminum oxide powder according to claim 1, wherein the mass ratio of the rare earth oxide to the zinc oxide to the gallium oxide to the aluminum oxide is 1: (1.5-2), (2.5-3) and (4.5-5).
3. The method according to claim 1, wherein the first predetermined time period is between 30 and 60 minutes, the second predetermined time period is between 50 and 200 minutes, the third predetermined time period is between 15 and 40 minutes, the fourth predetermined time period is between 150 and 250 minutes, the fifth predetermined time period is between 45 and 90 minutes, the sixth predetermined time period is between 200 and 400 minutes, and the seventh predetermined time period is between 400 and 800 minutes.
4. The method according to claim 1, wherein the first dispersant accounts for 3-15% of the total solid mass of the rare earth oxide, the zinc oxide and the first dispersant, the second dispersant accounts for 3-15% of the total solid mass of the gallium oxide and the second dispersant, and the third dispersant accounts for 3-15% of the total solid mass of the aluminum oxide and the third dispersant.
5. The method according to claim 1, wherein the first dispersant, the second dispersant and the third dispersant are anionic wetting dispersants.
6. The method for preparing rare earth doped zinc-gallium-aluminum oxide powder according to claim 1, wherein the binder accounts for 3-5% of the total solid mass of the rare earth oxide, the zinc oxide, the gallium oxide, the aluminum oxide and the binder.
7. The method according to claim 1, wherein the binder is at least one of polymethacrylic acid and polyvinyl alcohol.
8. The method according to claim 1, wherein the rare earth oxide has a purity of 4N and a particle size of 100-200 nm, the zinc oxide has a purity of 4N and a particle size of 100-200 nm, the gallium oxide has a purity of 4N and a particle size of 300-400 nm, and the aluminum oxide has a purity of 4N and a particle size of 50-100 nm.
9. A rare earth-doped zinc-gallium-aluminum oxide powder prepared according to the preparation method of claim 1, characterized in that: the chemical formula of the rare earth doped zinc-gallium-aluminum oxide is as follows: al (Al)1.5(GaxRe1-x)Zn0.677O4Wherein Re represents rare earth elements, and X is between 0.8 and 0.9.
10. The rare earth-doped zinc gallium aluminum oxide powder according to claim 9, wherein: the Re represents one of La, Ce, Pr, Nd and Y.
CN202011005236.6A 2020-09-23 2020-09-23 Rare earth doped zinc-gallium-aluminum oxide powder and preparation method thereof Pending CN112341168A (en)

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