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研究生： 陳彥豪
Chen, Yen-Hao
論文名稱： 介電陶瓷材料(1-y)(Mg4-xZnx)Nb2O9–ySrTiO3之研製及微波特性之探討
Study on Microwave Dielectric Material of (1-y)(Mg4-xZnx)Nb2O9–ySrTiO3
指導教授： 李炳鈞
LI, Bing-Jing
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年： 2013
畢業學年度： 102
語文別： 中文
論文頁數： 95
中文關鍵詞： 介電陶瓷 、共振溫度飄移係數
外文關鍵詞： dielectric ceramic, τf
相關次數： 點閱：56  下載：3 
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    • 本文探討(Mg4-xZnx)Nb2O9介電材料之共振頻率溫度漂移係數改善方法。為了將其負的共振頻率溫度飄移係數調整至趨近於零，我們添加具正值共振頻率溫度飄移係數的材料SrTiO3 (+1700 ppm/℃)經由實驗的結果，我們得知0.5Mg4Nb2O9–0.5SrTiO3有最佳的微波介電特性，其 約為22.8、Q×f約為11,700 GHz (at 9.79 GHz)及τf約為+4.7 ppm/℃。
    另外0.52Mg3.5Zn0.5Nb2O9–0.48SrTiO3，其 約為23.3、Q×f約為55,000 GHz(at 9.8GHz)及τf約為-6 ppm/℃，和0.55Mg3ZnNb2O9–0.45SrTiO3，其 約為23.7、Q×f約為50,000 GHz(at 9.1GHz)及τf約為-2 ppm/℃。

    The improvement of τf of (Mg4-xZnx)Nb2O9 have been investigated. In order to adjust their negative τf, SrTiO3 which have positive τf had been add. The experiment result showed that 0.5(Mg4Nb2O9–0.5SrTiO3 have the best microwave dielectric properties, it’s ~ 22.8, Q×f ~ 117,000 GHz (measured at 9.79 GHz) and τf ~ +4.7 ppm/℃.。
    And 0.52Mg3.5Zn0.5Nb2O9–0.48SrTiO3 have the best microwave dielectric properties, it’s ~ 23.3, Q×f ~55,000 GHz (measured at 9.8 GHz) and τf ~ +4.7 ppm/℃.， and.55Mg3ZnNb2O9–0.45SrTiO have the best microwave dielectric properties, it’s ~ 23.7, Q×f ~50,000 GHz (measured at 9.1 GHz) and τf ~ -2ppm/℃。

    摘要 Ⅰ Abstract Ⅱ 目錄 Ⅳ 表目錄 Ⅶ 圖目錄 Ⅷ 第一章 緒論 1 1-1. 前言 1 1-2. 研究動機與目的 2 第二章 介電陶瓷材料原理 3 2-1. 介電陶瓷材料之微波特性 3 2-1-1. 介電性質 3 2-1-2. 介電品質因數 4 2-2. 介電理論 7 2-2-1. 介電共振氣器原理 7 2-2-2. 介電性質 10 2-3 尖晶石之結構 13 2-4陶瓷材料燒結原理 16 2-4-1. 陶瓷材料燒結之擴散機制 16 2-4-2. 陶瓷材料燒結之過程 17 2-4-3. 陶瓷材料燒結之種類 18 第三章 實驗程序與量測方法 21 3-1. 微波介電材料的製備 22 3-1-1. 粉末製備 22 3-2. 微波介電材料的特性分析與量測 25 3-2-1. X-Ray（XRD）分析 25 3-2-2. 掃瞄式電子顯微鏡（SEM）分析 26 3-2-3. 密度之量測 27 3-2-4. 微波介電特性之量測 28 3-2-5. 共振頻率溫度係數之量測 36 第四章 實驗結果與討論 37 4-1. (Mg4-xZnx)Nb2O9之特性分析與探討 37 4-1-1. (Mg4-xZnx)Nb2O9之XRD相鑑定分析 37 4-1-2. (Mg4-xZnx)Nb2O9之密度分析 44 4-1-3. (Mg4-xZnx)Nb2O9之SEM微結構分析 46 4-1-4. (Mg4-xZnx)Nb2O9之微波介電特性分析 52 4-1-5. (Mg4-xZnx)Nb2O9之共振頻率溫度飄移係數分析 54 4-1-6. (Mg4-xZnx)Nb2O9之離子極化率（αobs）分析結果 55 4-1-7. (Mg4-xZnx)Nb2O9之理論介電常數（ (cal.)）分析結果 57 4-2. (1-y)Mg4Nb2O9-y SrTiO3之特性分析與探討 58 4-2-1. (1–y)Mg4Nb2O9–y SrTiO3之XRD相鑑定分析 59 4-2-2. (1–y)Mg4Nb2O9–y SrTiO3之密度分析 60 4-2-3. (1–y)Mg4Nb2O9–y SrTiO3之SEM微結構分析 64 4-2-4. (1–y)Mg4Nb2O9–y SrTiO3之微波介電特性分析 67 4-2-5. (1–y)Mg4Nb2O9–y SrTiO3之共振頻率溫度飄移係數分析 69 4-3. (1-y)Mg3.5Zn0.5Nb2O9-y SrTiO3之特性分析與探討 70 4-3-1. (1–y)Mg3.5Zn0.5Nb2O9–y SrTiO3之XRD相鑑定分析 71 4-3-2. (1–y) )Mg3.5Zn0.5Nb2O9–y SrTiO3之密度分析 72 4-3-3. (1–y) )Mg3.5Zn0.5Nb2O9–y SrTiO3之SEM微結構分析 75 4-3-4. (1–y) )Mg3.5Zn0.5Nb2O9–y SrTiO3之微波介電特性分析 78 4-3-5. (1–y) )Mg3.5Zn0.5Nb2O9–y SrTiO3之共振頻率溫度飄移係數分析 81 4-4. (1-y)Mg3ZnNb2O9-y SrTiO3之特性分析與探討 82 4-4-1. (1–y)Mg3ZnNb2O9–y SrTiO3之XRD相鑑定分析 82 4-4-2. (1–y) )Mg3ZnNb2O9–y SrTiO3之密度分析 84 4-4-3. (1–y) )Mg3ZnNb2O9–y SrTiO3之SEM微結構分析 87 4-4-4. (1–y) )Mg3ZnNb2O9–y SrTiO3之微波介電特性分析 90 4-4-5. (1–y) )Mg3ZnNb2O9–y SrTiO3之共振頻率溫度飄移係數分析 92 第五章 結論 93 參考文獻 95

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