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A high power yttrium gadolinium garnet ferrite

A technology of garnet and ferrite, applied in the field of microwave technology and magnetic materials, can solve the problems of low dielectric constant of materials and large loss of materials, etc.

Active Publication Date: 2017-09-29
东阳富仕特磁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention mainly aims at the high power characteristic (ΔH) existing in existing high power materials. k ) and the low loss characteristic (ΔH) are quite contradictory, that is, when ΔH k When the requirements are met, the loss of the material is too large. At the same time, the problem of the low dielectric constant of the material is also solved.

Method used

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  • A high power yttrium gadolinium garnet ferrite
  • A high power yttrium gadolinium garnet ferrite
  • A high power yttrium gadolinium garnet ferrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] According to the chemical formula

[0022] Sm x Y 3-x-y-2z-p-q-q′ Gd y Ca 2z+p+q+q′ V z Ge p Sn q Ti q′ In q″ Al w Mn w′ Fe 5-z-p-q-q′-q″-w-w′-δ O 12

[0023] Take: x=0.01; y=1.10; z=0.25; p=0; q=0; q′=0.05; q″=0.25; w=0.14; w′=0; respectively calculate the amount of raw materials required. Use Sm with purity ≥99.9% 2 O 3 ,Y 2 O 3 ,Gd 2 O 3 And analytically pure Fe 2 O 3 , CaCO 3 , V 2 O 5 ,In 2 O 3 ,TiO 2 ,Al(OH) 3 As raw materials, weigh out the corresponding weight of raw materials. After ball milling and mixing, pre-sintering at 1200°C, keeping the temperature for 4 hours, and then ball milling again, sintering at 1350°C and keeping the temperature for 5 hours after forming. The sintered sample is grinded and processed into small balls and rods required for measurement, and the parameters are tested. The measurement results are shown in Table 1.

[0024] Table 1 Example 1 Electromagnetic performance parameters of 850G high-power garnet material

[0025]

Embodiment 2

[0027] According to the chemical formula

[0028] Sm x Y 3-x-y-2z-p-q-q′ Gd y Ca 2z+p+q+q′ V z Ge p Sn q Ti q′ In q″ Al w Mn w′ Fe 5-z-p-q-q′-q″-w-w′-δ O 12

[0029] Take: x=0.02; y=0.58; z=0; p=0; q=0.15; q′=0.03; q″=0; w=0; w′=0, calculate the amount of raw materials required. Use Sm with purity ≥99.9% 2 O 3 ,Y 2 O 3 ,Gd 2 O 3 And analytically pure Fe 2 O 3 , CaCO 3 , SnO 2 ,TiO 2 As raw materials, weigh out the corresponding weight of raw materials. After ball milling and mixing, pre-sintering at 1250°C and holding for 4 hours, and then ball milling again, sintering at 1400°C and holding for 5 hours after forming. The sintered sample is grinded and processed into small balls and rods required for measurement, and the parameters are tested. The measurement results are shown in Table 2.

[0030] Table 2 Example 2 Electromagnetic parameters of Sm, Ti: YGdIGs high-power garnet materials

[0031]

example 3

[0033] According to the chemical formula

[0034] Sm x Y 3-x-y-2z-p-q-q′ Gd y Ca 2z+p+q+q′ V z Ge p Sn q Ti q′ In q″ Al w Mn w′ Fe 5-z-p-q-q′-q″-w-w′-δ O 12

[0035] Take: x=0.01; y=1.20; z=0.28; p=0.10; q=0.25; q′=0.05; q″=0; w=0; w′=0.04, calculate the amount of raw materials needed. Use. Sm with purity ≥99.9% 2 O 3 ,Y 2 O 3 ,Gd 2 O 3 And analytically pure Fe 2 O 3 ,CaCO 3 ,GeO 2 ,V 2 O 5 ,SnO 2 ,TiO 2 ,MnCO 3 As raw materials, weigh out the corresponding weight of raw materials. After mixing by ball milling, pre-sintering at 1200°C, keeping the temperature for 4 hours, and then ball milling again, sintering at 1330°C and keeping the temperature for 5 hours after forming. The sintered sample is grinded and processed into small balls and rods required for measurement, and the parameters are tested. The measurement results are shown in Table 3.

[0036] Table 3 Example 3 Electromagnetic parameters of Sm, Ti: YGdCaVIG high-power garnet material

[0037]

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Abstract

The invention discloses a high-power yttrium-gadolinium garnet ferrite having the composition chemical formula specifically expressed as Sm[x]Y[3-x-y-2z-p-q-q']Gd[y]Ca[2z+p+q+q']V[z]Ge[p]Sn[q]Ti[q']In[q'']Al[w]Mn[w']Fe[5-z-p-q-q'-q''-w-w'-[delta]]O[12], wherein 0<=x<=0.20, 0<=y<=3.0, 0<=z<=1.3, 0<=p<=0.9, 0<=q<=0.7, 0<=q'<=0.7, 0<=q''<=0.70, 0<=w<=1.3, 0<=w'<=0.10, 0<=delta<=0.8, and delta represents iron deficient quantity. The high-power garnet ferrite material having high spin wave line width [delta]Hk, low ferromagnetic resonance line width [delta]H and high dielectric constant epsilon' can be obtained.

Description

Technical field [0001] The invention belongs to the field of microwave technology and magnetic materials. It is a high-power low-loss garnet-type microwave ferrite material, which is mainly used as a gyromagnetic substrate for high-power circulators and isolators in microwave systems. Background technique [0002] The purpose of the development of high-power materials is to solve the critical field h of ordinary materials due to high-power nonlinear effects. c Low, under high power, it is easy to cause the problem of lower power endurance of the device due to material nonlinear effects. Material's spin wave linewidth ΔH k It is the main indicator of the high power performance of the material, ΔH k With h c Have h c =(ω / ω m )ΔH k [1] Relationship, where ω is the angular frequency, ω m =γM s , M s Is the saturation magnetization and γ is the gyromagnetic ratio. The main requirements for high-power microwave ferrite materials for high-power circulators and isolators are: 1) Spin wav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/34C04B35/40
Inventor 韩志全王天进张方远
Owner 东阳富仕特磁业有限公司
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