鈦鋯酸鉛(PbZrTiO3, PZT)陶瓷具有鈣鈦礦(Perovskite)結構，不僅具有較高機電耦合因數(Electromechanical Coupling Coefficient, K) 的壓電特性，適用於壓電效應傳導的表面聲波上外；其亦擁有鐵電特性所具有的高介電特性及鐵電遲滯特性，作成的高密度記憶體元件，如新世代的動態隨機存取記憶體及非揮發性記憶體等。
本實驗主要探討具有壓電特性的鈦鋯酸鉛，在摻雜鈮之後所產生的壓電與鐵電效應，並利用量測儀器包括了阻抗與增益相位分析儀、數位儲存式示波器、自製之Sawyer-Tower電路等，來量測試片之壓電及鐵電特性。
本實驗結果為介電常數於1KHz時約為1530，損失因數大約2%，最大徑向機電耦合因數值約為0.6，且殘留極化強度約為6μcl/cm2，矯頑電場強度約為12KV/cm。此證明摻雜鈮之後改善了壓電與鐵電特性。而就壓電與鐵電特性之關係趨勢而言；機電耦合因數與介電常數均對殘留極化強度之變化，皆呈較顯著之正比線性關係。

Lead zirconate titanate (PZT) ceramics inherent in excellent piezoelectric characteristics. In this thesis, we tried to add Nb dopants in the PZT(52/48) ceramic systems to form soft PZT samples and investigated the piezoelectric and ferroelectric characteristics of the samples.
The dielectric constant measured at 1KHz is about 1530 and the loss factor is about 2%. The maximum planar electromechanical coupling coefficient, Kp, is 0.6 and the remanent polarization is about 6μcl/cm2, the coercive field is about 12KV/cm. For cross analysis of piezoelectric and ferroelectric characteristics, we found there exist a positive linear relationship between electromechanical coupling coefficients, dielectric constant and the remanent polarization which showed that the Nb additives were helpful improving both piezoelectric and ferroelectric characteristics.

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