發(fā)布時間：2018-02-17 06:55

  本文關(guān)鍵詞： 釔鐵石榴石鐵氧體 氧化物固相燒結(jié) 離子取代 鐵磁共振線寬 微帶環(huán)行器　出處：《電子科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：釔鐵石榴石鐵氧體材料(YIG)是研究其他石榴石鐵氧體材料的基礎(chǔ),且因其特有的旋磁特性以及優(yōu)良的性能參數(shù)(窄線寬等)而被廣泛地應(yīng)用于不同頻段的微波鐵氧體器件當(dāng)中。因此對釔鐵石榴石鐵氧體材料(YIG)進行改性研究成為了當(dāng)今的主要課題之一。本文采用離子取代的方式,并通過固相燒結(jié)制備出了Y3Fe5-xSbxO12(x=0~0.4)、Y3-xCaxFe5-xZrxO12(x=0~0.6)、Y3Fe5-2xZnxZrxO12(x=0~0.3)、Y3-xCaxFe5-xSnxO12(x=0~0.6)、Y3Fe5-2xZnxSnxO12(x=0~0.35)鐵氧體材料,詳細研究了離子取代量對釔鐵石榴石鐵氧體微觀結(jié)構(gòu)以及磁性能的影響。研究表明,Sb3+取代使得石榴石鐵氧體材料的鐵磁共振線寬增大,介電常數(shù)也在不斷地增加。Ca2+Zr4+共取代,Zn2+Zr4+共取代、Ca2+Sn4+共取代、Zn2+、Sn4+共取代都可以降低材料的鐵磁共振線寬,即降低材料的磁損耗,四種取代分別在x=0.4,0.1,0.3,0.25時取得最小值,但是隨著離子取代量的增加,含有Zr離子的取代可能會生成另相,Sn離子在實驗中x取值范圍內(nèi),取代離子都進入了晶格而隨著離子取代量的增加,釔鐵石榴石鐵氧體的密度與飽和磁化強度等性能根據(jù)取代離子的不同而發(fā)生變化。本論文還研究制備出了1.4-1.6GHz的微帶環(huán)行器,根據(jù)YIG材料的旋磁特性,并且運用鐵氧體微帶環(huán)行器的設(shè)計理論方法,設(shè)計出環(huán)行器的尺寸,運用HFSS軟件進行仿真優(yōu)化,最終得到最優(yōu)尺寸結(jié)果,運用CAD制圖,采用絲網(wǎng)印刷工藝制備出了環(huán)行器,并制備出了一個測試夾具便于測試環(huán)行器的S參數(shù)。本文采用矢量網(wǎng)絡(luò)分析儀測試環(huán)行器的S參數(shù),確定了環(huán)行器的設(shè)計是可行的,也驗證了本實驗中制備的YIG材料的實用性。
[Abstract]:Yttrium iron garnet ferrite (YIG) is the basis of other garnet ferrite materials, and because of its unique characteristics of rotating magnetic field and the parameter of excellent (Zhai Xiankuan) has been widely used in microwave ferrite devices with different frequency. So the yttrium iron garnet ferrite body material (YIG) was modified to become one of the main topics today. This paper adopts ion substitution method, and through the solid phase sintering was prepared by Y3Fe5-xSbxO12 (x=0~0.4), Y3-xCaxFe5-xZrxO12 (x=0~0.6), Y3Fe5-2xZnxZrxO12 (x=0~0.3), Y3-xCaxFe5-xSnxO12 (x=0~0.6), Y3Fe5-2xZnxSnxO12 (x=0~0.35) ferrite material investigated the amount of yttrium iron garnet ferrite microstructure and magnetic properties. The results show that Sb3+ substituted the ferromagnetic resonance linewidth of garnet ferrite increases, the dielectric constant increases continuously in.Ca2 +Zr4+ Co Zn2+Zr4+ co substitution, substitution, Ca2+Sn4+ Zn2+, Sn4+ substitution, CO substitution can reduce the ferromagnetic resonance linewidth of materials, which reduce the magnetic loss material, four substituted respectively when x=0.4,0.1,0.3,0.25 has a minimum value, but with the increase of the amount of ion substitution, substitution may generate another phase containing Zr ion Sn, X ion in the experiment range, substituted ions into the lattice with the increase of the amount of ion substituted yttrium iron garnet ferrite density and saturation magnetization properties changes according to the different substituted ions. This thesis also studies the fabricated microstrip circulator according to 1.4-1.6GHz. Gyromagnetic properties of YIG materials, and the use of the design theory of ferrite microstrip circulator, design a circulator size, were simulated by HFSS software, then get the optimal size results, using CAD mapping, mining With the screen printing process to fabricate the circulator, and prepared the S parameters of a test fixture for testing the circulator. This paper uses the S parameter vector network analyzer circulator, determine the design of the circulator is feasible, also verified the practicability of the YIG materials prepared in this experiment.

【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM277;TN621

【參考文獻】

相關(guān)期刊論文 前1條

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本文編號：1517480