本文主要探討鉛酸鋇陶瓷之基本特性與其添加入銀電極對壓電陶瓷之特性改良，利用X光繞射分析中鉛酸鋇陶瓷與混合電極的結構，四點探針量測其電阻率，光學/電子顯微鏡觀察微觀結構，最後量測其漏電流、電滞曲線與疲勞特性，並評估銀電極及BPO+Ag混合電極對PMNZT特性之影響。
研究結果顯示在鉛酸鋇(BPO)粉末於800℃煆燒合成，富氧的燒結條件下較空氣中燒結有較佳的導電性，且由於鉛揮發導致晶界處會有PbO液相燒結微觀產生，促使晶粒尺寸明顯成長。在X光繞射分析中，發現添加BPO於銀電極經高溫熱處理(800℃)，會出現一些特殊的峰值，利用JCPDS Cards與XRD分析軟體分析得知這些峰值乃是BPO與PMNZT的中間反應物(Pb0.8Ba0.2)ZrO3，和鉛揮發產生的PbO的峰值。電阻率的量測方面，可知添加BPO於銀電極會提升銀電極的電阻率，其原因為BPO的添加會提升銀電極的孔隙；降低銀的晶粒尺寸並提升晶界的量，使得電子傳導有較多阻礙，使電阻率提高。在顯微鏡的分析中可知，銀晶粒尺寸會隨著熱處理的溫度提升而增加；且可觀察到BPO的添加的確有助於抑制銀晶粒尺寸成長與緻密化，此結果可與電阻率的結果相呼應；此外，在EDS的分析上也可發現，微觀結構分成大顆基底Ag與零散分佈的小顆粒主要為Ba、Pb、O所組成，表示BPO可能與銀沒有太多固溶性。
漏電流量測結果發現，純銀電極的漏電流最低，其主要原因於銀電極緻密化程度較BPO+Ag混合電極佳；但是適度BPO添加並於800℃以下熱處理，可避免PMNZT基材中鉛揮發；且由於(Pb0.8Ba0.2)ZrO3生成，將有助於降低漏電流密度。
在鐵電特性量測中可知，BPO的添加有助於銀電極與PMNZT基材的結合，並且使Pr值提升與Ec值降低；此外在鐵電疲勞的量測中可知，添加BPO於銀電極中，將提升PMNZT的Pr值與降低Ec值，使整體元件的鐵電性與疲勞特性較單純利用銀作為電極更加優異。因此，BPO添加於銀電極之混合電極的確有助於提升鐵電陶瓷之鐵電與疲勞特性。
在機電耦合因數Kp量測中，Ag+BPO電極所量得之kp與純銀電極無明顯差異，顯示BPO的添加對kp值沒有負面的影響，甚至能提升其kp值。

In this thesis, we researched the basic properties of BaPbO3 (BPO) ceramic and added BPO powder into silver electrodes to improve the piezoelectric properties of PMNZT. X-Ray diffraction was used to get the crystal structure of BPO modified Ag electrodes; surface morphology and microstructures were observed using OM and SEM. The resistively, leakage current, ferroelectric and piezoelectric properties were measured by a four-point probe, a ferroelectric testing system (Precision workstation) and impedance-gain analyzer (HP-4194A) respectively.
Perovskite BPO powder were gained by calcined in air at 800℃for 24 hours. The resistively of sintered BPO ceramics would be lower if sintered in oxygen rich atmosphere than in air. There were some layer structures in grain boundaries, and grain size in oxygen rich sintered ceramic at 1050℃was much larger than that of in air sintered. We found that the main content of layer structure was PbO, which melted at 880℃ and formed a liquid phase sintering condition; for this result, the grain size were much lager than sintered in other condition.
In X-Ray diffraction of Ag+BPO electrodes, there were some particular peaks after heat treated at 800℃, and we found out that the peaks were (Pb0.8Ba0.2)ZrO3 by fitting with JCPDS Cards. The resistively of electrodes were higher if BPO added. From SEM and OM images, we were informed that grain size of Ag would increase following heat treatment temperature increase, and BPO could restrict the grain growing, this result fitted that informed from resistance measurement. In EDS analysis, microstructures could divided into two parts, one of them is composed of lager grain size of silver in base, the other is composed of smaller grain size of Ba、Pb、O, and it means that there could be less possibility for BPO and silver to be solid soluted into each other. In leakage current measurement, we informed that lead evaporation could be avoid if we add proper amount of BPO in electrode and heat treated under 800℃, and leakage current density could be lower because of (Pb0.8Ba0.2)ZrO3 formed.
In ferroelectric characteristics measurement, addition of BPO into Ag electrodes would be benefit to the combination between electrodes and PMNZT, and risen Pr value and lower Ec value.

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