The pMUTs was based on an epitaxial PMnN-PZT/Si diaphragm structure and prototyped from a SOI substrate; its rangefinding ability was evaluated with a pair of devices, specifically, transmitter and receiver, respectively. As a result, the maximum range was estimated to be over 2m at a low ...
Frequency and temperature dependence of the hysteresis loop in PMnN-PZT ceramics铌锰锆钛酸铅铁电陶瓷电滞回线的温度和频率响应面心立方动态回复应力应变?一,引言电滞回线是铁电体的主要特征之一,电滞回线的测量是检验铁电体的一种主要手段,常见的电滞回线如图1所示.通过电滞回线的测量,可测定铁电体的剩余极化...
The sintering behaviors and high-power piezoelectric properties of four kinds of powders of Pb(Mn 1/3Nb 2/3)O 3–Pb(Ti,Zr)O 3 (PMnN–PZT) ceramics have been investigated. These powders are derived from ball milling and stirring milling, respectively. The results reveal that long time mill...
PMnN-PZT压电陶瓷材料机电转化效率试验采用固相合成法,通过Li_(2)CO_(3)掺杂,制得高能量密度的Pb_(0.95)Sr_(0.05)[(Mn_(1/3)Nb_(2/3))_(0.04)(Zr_(0.52)Ti_(0.48))0.96]O_(3)+0.25wt%CeO_(2)+0.50wt%Yb_(2)O_(3)+0.15wt%Fe_(2)O_(3)三元系压电陶瓷材料.研究分析了掺杂不同质量...
PZT-based monocrystalline thin film on SiMEMS (Micro-electro mechanical systemsCurie temperatureIn this study, ac-axis-oriented PMnN-PZT monocrystalline thin film was sputter-deposited on a Si substrate covered with buffer layers. Curie temperature,Tc, was estimated by investigating the temperature ...
铌锰锆钛酸铅烧结温度锰价态氧空位运用XRD,SEM,TEM,XPS等实验手段,研究了烧结温度对0.05PMnN-0.95PZT(PMnN—PZT)压电陶瓷微观结构,压电性能及锰元素价态的影响,实验结果显示:随烧结温度的降低平均晶粒尺寸减小,四方度也随之减小;机电耦合系数(kp)随烧结温度的升高而提高,而机械品质因子(Qm)却呈波浪状变化.XPS及...
PMnN-PZT陶瓷烧结The microstructure and piezoelectric properties of Pb[(Zr0.52Ti0.48)0.95(Mn1/3Nb2/3)0.05]03 (PMnN-PZT) ceramics have been investigated at different sintering temperatures from 1070℃ to 1280℃. The experimental results suggest that grain sizes and electromechanical properties of the...
PMnN-PZT powdersthermogravimetryPb(Mn_(1/3)Nb_(2/3))O_3-Pb(Ti,Zr)O_3 (PMnN-PZT) powders were synthesized by a hybrid method of sol-gel and ultrasonic atomization. The study shows that the resulting powder is pure, homogeneous and possesses a reasonably fine particle size. It is also...
Pb[(Mn0.33Nb0.67)(1/2)(Mn0.33Sb0.67)(1/2)](0.08)(ZrxTi1-x)(0.92)O-3 (PMnN-PMS-PZT) pyroelectric ceramics with varied compositions were successfully prepared by the conventional solid state method. The microstructures and electric properties of three different Zr/Ti compositions, i.e. 94...
PZT-PMnN ceramic sintered at 950 degrees C possessed high piezoelectric performances, i.e. d(33) of 411 pC/N and d(33)(*) of 556pm/V. Furthermore, a high mechanical quality factor Q(m) (480) and low dielectric loss (0.19%) were obtained. Therefore, the spark-plasma-sintered PZT-...