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High-power yttrium-gadolinium garnet ferrite

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

Active Publication Date: 2016-02-24
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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  • High-power yttrium-gadolinium garnet ferrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] According to 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; and 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 the raw material, weigh out the corresponding weight of the raw material. Mixed by ball milling, pre-fired at 1200°C, heat preservation for 4 hours, and then ball milled twice, after molding, sintered at 1350°C, heat preservation for 5 hours. The sintered samples were ground and made into small balls and rods required for measurement, and carried out parameter tests. 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 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 needed. 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 the raw material, weigh out the corresponding weight of the raw material. Mixed by ball milling, pre-fired at 1250°C, heat preservation for 4 hours, and then ball milled twice, after molding, sintered at 1400°C, heat preservation for 5 hours. The sintered samples were ground and made into small balls and rods required for measurement, and carried out parameter tests. The measurement results are shown in Table 2.

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

[0031]

example 3

[0033] According to 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 the raw material, weigh out the corresponding weight of the raw material. Mixed by ball milling, pre-fired at 1200°C, heat preservation for 4 hours, and then ball milled twice, after molding, sintered at 1330°C, heat preservation for 5 hours. The sintered samples were ground and made into small balls and rods required for measurement, and carried out parameter tests. 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, and is a high-power and 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 low power withstand capability of the device caused by the nonlinear effect of the material. The spin wave linewidth ΔH of the material k 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] , 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 circul...

Claims

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Application Information

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IPC IPC(8): C04B35/40
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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