1. 毕业设计（论文）的内容和要求

pmn#8212;pt是作为松弛剂(散慢相转移介电体)的铌镁酸铅(pmn)与作为压电体的钛酸铅(pr)的固溶体单晶，与传统的主要压电材料锆钛酸铅(pzi#8217;)陶瓷相比，pmn#8212;pt可得3倍以上的压电变形，电气机械耦合系数也大，显示优良的压电特性。

因此，与传统的pzt陶瓷相比，pmn#8212;pt有如下优点：① 可得到医疗的非破坏性检查、鱼群探索等比超声波振荡器更鲜明的图像。

② 比洗涤机等的超声波振荡器更强的振动也可能发生。

2. 参考文献

[1]Geon-Tae Hwang HP, Jeong-Ho Lee , SeKwon Oh , Kwi-Il Park , Myunghwan Byun , , Hyelim Park GA, Chang Kyu Jeong , Kwangsoo No , HyukSang Kwon ,, Sang-Goo Lee BJ, and Keon Jae Lee. Self-Powered Cardiac Pacemaker Enabled by Flexible Single Crystalline PMN-PT Piezoelectric Energy Harvester[J]. Advanced Materials. 2014, 26:4880#8211;7. [2]Nan T, Liu M, Ren W, Ye ZG, Sun NX. Voltage control of metal-insulator transition and non-volatile ferroelastic switching of resistance in VOx/PMN-PT heterostructures[J]. Scientific reports. 2014,4:5931. [3]Shi W. Grain-alignment Control Preparation of PMN-PT and BNT Piezoelectric Ceramics[J]. Nanjing University of Technology. 2008. [4]Xu S, Poirier G, Yao N. PMN-PT nanowires with a very high piezoelectric constant[J]. Nano Lett. 2012,12(5):2238-42. [5]Xu S, Poirier G, Yao N. Fabrication and piezoelectric property of PMN-PT nanofibers[J]. Nano Energy. 2012,1(4):602-7. [6]Xu S, Yeh YW, Poirier G, McAlpine MC, Register RA, Yao N. Flexible piezoelectric PMN-PT nanowire-based nanocomposite and device[J]. Nano Lett. 2013,13(6):2393-8. [7]Zhang Y, Gao G, Chan HL, Dai J, Wang Y, Hao J. Piezo-phototronic effect-induced dual-mode light and ultrasound emissions from ZnS:Mn/PMN-PT thin-film structures[J]. Advanced materials. 2012,24(13):1729-35. [8]Dariusz Bochenek PN, Ryszard Skulski , Artur Chrobak , Pawe#322; Wawrza#322;a. Ferroelectric and magnetic properties of the PMN-PT-nickel zinc ferrite multiferroic ceramic composite materials[J]. Materials Chemistry and Physics 2015,157 116-23. [9]E. Moses Jayasingh KP, R. Sooraj, C. Durgaprasad, S.C. Sharma. Synthesis of pyrochlore free PMN-PT powder by partial oxalate process route[J]. Ceramics International 2009,35 591#8211;6.

3. 毕业设计（论文）进程安排

起讫日期 设计（论文）各阶段工作内容 备 注 2016.03.15～2016.03.28 查阅文献，做好实验计划 2周 2016.03.29～2016.04.11 样品制备 1 周 2016.04.12～2016.04.19 产物表征、测试 2周 2016.04.20～2016.04.27 工艺完善、实验数据的整理 1周 2016.04.28～2016.05.04 中期总结，论文初稿 1周 2016.05.05～2016.05.28 补充试验数据，完善论文 2 周 2016.05.29～2016.06.5 PPT制作，准备答辨 1 周