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Garnet ferrite material without rare earth and preparation method of garnet ferrite material

A ferrite material, garnet technology, applied in the field of rare earth-free garnet ferrite material and its preparation, can solve the problems of small quantity, high cost, complicated purification process, etc., and achieve low cost, high dielectric constant, The effect of the reasonable process

Inactive Publication Date: 2017-12-01
SOUTHWEST INST OF APPLIED MAGNETICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the preparation of garnet microwave ferrite materials requires a large amount of rare earth raw materials Y 2 o 3 , and Y 2 o 3 The quantity is small and the purification process is complicated, so its cost is high

Method used

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  • Garnet ferrite material without rare earth and preparation method of garnet ferrite material

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Experimental program
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Effect test

Embodiment 1

[0029] A rare earth-free garnet microwave ferrite material, its main phase structure is garnet structure, and its chemical composition formula is Bi 3-(2a+b+c+m+n) Ca 2a+b+c+m+n V a Zr b sn c In d Ti m Ge n Fe 5-a-b-c-d-m-n-δ o 12 , where a=0.6, b=0.4, c=0.1, d=0, m=0, n=0.1, δ=0.1.

[0030] The preparation method of this rare earth-free garnet microwave ferrite material is as follows:

[0031] (1) Formulation design, according to the composition chemical formula

[0032] Bi 3-(2a+b+c+m+n) Ca 2a+b+c+m+n V a Zr b sn c In d Ti m Ge n Fe 5-a-b-c-d-m-n-δ o 12 Carry out formula design, wherein a=0.6, b=0.4, c=0.1, d=0, m=0, n=0.1, δ=0.1;

[0033] (2) Weighing, according to step (1) formula design result, calculate and take by weighing required various raw materials, raw material is the Fe of analytical purity 2 o 3 、 Bi 2 o 3 , CaCO 3 , V 2 o 5 , ZrO 2 , SnO 2 、In 2 o 3 、TiO 2 、GeO 2 etc., the total weight of prepared raw materials is 1kg;

[0034]...

Embodiment 2

[0042] A rare earth-free garnet microwave ferrite material, its main phase structure is garnet structure, and its chemical composition formula is Bi 3-(2a+b+c+m+n) Ca 2a+b+c+m+n V a Zr b sn c In d Ti m Ge n Fe 5-a-b-c-d-m-n-δ o 12 , where a=0.5, b=0.3, c=0.1, d=0, m=0.1, n=0.1, δ=0.1.

[0043] The preparation method of this rare earth-free garnet microwave ferrite material is as follows:

[0044] (1) Formulation design, according to the composition chemical formula

[0045] Bi 3-(2a+b+c+m+n) Ca 2a+b+c+m+n V a Zr b sn c In d Ti m Ge n Fe 5-a-b-c-d-m-n-δ o 12 Carry out formulation design, where a=0.5, b=0.3, c=0.1, d=0, m=0.1, n=0.1, δ=0.1;

[0046] (2) Weighing, according to step (1) formula design result, calculate and take by weighing required various raw materials, raw material is the Fe of analytical purity 2 o 3 、Bi 2 o 3 , CaCO 3 , V 2 o 5 , ZrO 2 , SnO 2 、In 2 o 3 、TiO 2 、GeO 2 etc., the total weight of prepared raw materials is 1kg;

[...

Embodiment 3

[0055] A rare earth-free garnet microwave ferrite material, its main phase structure is garnet structure, and its chemical composition formula is Bi 3-(2a+b+c+m+n) Ca 2a+b+c+m+n V a Zr b sn c In d Ti m Ge n Fe 5-a-b-c-d-m-n-δ o 12 , where a=0.1, b=1, c=0.2, d=0.1, m=0, n=0, δ=0.1.

[0056] The preparation method of this rare earth-free garnet microwave ferrite material is as follows:

[0057] (1) Formulation design, according to the composition chemical formula

[0058] Bi 3-(2a+b+c+m+n) Ca 2a+b+c+m+n V a Zr b sn c In d Ti m Ge n Fe 5-a-b-c-d-m-n-δ o 12 Carry out formulation design, where a=0.1, b=1, c=0.2, d=0.1, m=0, n=0, δ=0.1;

[0059] (2) Weighing, according to step (1) formula design result, calculate and take by weighing required various raw materials, raw material is the Fe of analytical purity 2 o 3 、Bi 2 o 3 , CaCO 3 , V 2 o 5 , ZrO 2 , SnO 2 、In 2 o 3 、TiO 2 、GeO 2 etc., the total weight of prepared raw materials is 1kg;

[0060] (3...

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Abstract

The invention discloses a garnet ferrite material without rare earth and belongs to the technical field of microwave ferrite materials. The garnet ferrite material has a chemical formula being Bi(3-(2a+b+c+m+n))Ca(2a+b+c+m+n)VaZrbSncIndTimGenFe(5-a-b-c-d-m-n-delta)O12, wherein a is larger than or equal to 0 and smaller than or equal to 1, b is larger than or equal to 0 and smaller than or equal to 1, c is larger than or equal to 0 and smaller than or equal to 0.8, d is larger than or equal to 0 and smaller than or equal to 0.7, m is larger than or equal to 0 and smaller than or equal to 1, and delta denotes the iron deficiency amount and is larger than or equal to 0.02 and smaller than or equal to 0.5. The invention also discloses a preparation method of the material. Tests prove that the garnet ferrite material without rare earth has the dielectric constant epsilon larger than or equal to 20, the ferromagnetic resonance linewidth delta H smaller than or equal to 7 kA / m and the dielectric loss tg delta epsilon smaller than or equal to 0.0005. The garnet ferrite material has the characteristics of low cost, high dielectric constant and the like and can be used for solving the problem of miniaturization of microwave devices. The preparation method adopts a reasonable process and is suitable for popularization and application, material consumption can be reduced, and the cost is further reduced.

Description

technical field [0001] The invention relates to the technical field of microwave ferrite materials, in particular to a rare earth-free garnet ferrite material and a preparation method thereof. Background technique [0002] Garnet microwave ferrite (molecular formula is R 3 Fe 5 o 12 , R is the trivalent rare earth metal ion Y 3+ 、Gd 3+ etc.), with low dielectric loss, low anisotropy field, high density, low magnetic loss and narrow resonance linewidth △H, widely used in national defense, satellite communication and mobile communication and other fields. [0003] At present, the preparation of garnet microwave ferrite materials requires a large amount of rare earth raw materials Y 2 o 3 , and Y 2 o 3 The quantity is small and the purification process is complicated, so its cost is high. [0004] In addition, the size of microwave ferrite materials is closely related to the dielectric constant of the material. The larger the dielectric constant of the material, the sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/26C04B35/622
CPCC04B35/2683C04B35/622C04B2235/3208C04B2235/3232C04B2235/3239C04B2235/3244C04B2235/3286C04B2235/3287C04B2235/3293C04B2235/3298
Inventor 杨菲任仕晶廖杨牛奔奔
Owner SOUTHWEST INST OF APPLIED MAGNETICS
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