1. 毕业设计（论文）的内容和要求

课程论文是对大学四年级学习情况以及对所做的课题情况的真实反映，其内容应该包括以下方面： 1. 查阅、搜集与本课题相关的书籍和文献资料，熟悉、了解无铅压电陶瓷材料的应用状况和常用的制备方法。

2. 掌握传统固相法合成knns-bnkz无铅压电陶瓷材料的制备工艺，并分析讨论温度对knns-bnkz无铅压电陶瓷材料的物相、形貌及尺寸的影响，并测试其应变性能。

最后，在这些基础上要总结实验操作经验及注意事项，并按要求完成毕业论文的全部内容。

2. 参考文献

[1] SAITO Y, TAKAO H, TANI T, et al. Lead‐Free Piezoceramics [J]. Nature, 2004, 432(7013): 84-89. [2] VALASEK J. Piezo-Electric and Allied Phenomena in Rochelle Salt [J]. Physical Review, 1921, 17(4): 475-481. [3] ELLIOTT A M. Effects of carbohydrates on growth of Colpidium [J]. Arch Protistenkunde, 1935, 254(3):39-45. [4] 钟维烈. 铁电体物理学 [M]. 科学出版社, 1996. [5] KITTEL C. Theory of Antiferroelectric Crystals [J]. Physical Review, 1951, 82(5): 729-732. [6] SAWAGUCHI E, MANIWA H, HOSHINO S. Antiferroelectric Structure of Lead Zirconate [J]. Physical Review, 1951, 83(5): 1078-1083. [7] UCHINO K. Piezoelectric Actuators and Ultrasonic Motors [M]. Springer Publishing Company, Incorporated, 2011.21(5):71-79. [8] VANDERBILT D. Principles and Applications of Ferroelectrics and Related Materials : M.E. Lines, A.M. Glass (Eds.), Oxford University Press, Oxford (re-issue 2001 in paperback), 607 pp [J]. Materials Research Bulletin, 2002, 37(11): 1893-1904. [9] ULLAH A, CHANG W A, HUSSAIN A, et al. Structural transition and large electric field-induced strain in BiAlO3-modified Bi0.5(Na0.8K0.2)0.5TiO3 lead-free piezoelectric ceramics [J]. Solid State Communications, 2010, 150(25): 1145-1149. [10] KAKIMOTO K I, MASUDA I, OHSATO H. Lead-free KNbO3 piezoceramics synthesized by pressure-less sintering [J]. Journal of the European Ceramic Society, 2005, 25(12): 2719-2722. [11] RUBIO-MARCOS F, MARCHET P, DUCL RE J R, et al. Evolution of structural and electrical properties of (K,Na,Li)(Nb,Ta,Sb)O3 lead-free piezoceramics through CoO doping [J]. Solid State Communications, 2011, 151(20): 1463-1466. [12] WU J, XIAO D, ZHU J. Potassium-sodium niobate lead-free piezoelectric materials: past, present, and future of phase boundaries [J]. Chemical Reviews, 2015, 115(7): 2559-2595. [13] KONG Z, BAI W, ZHENG P, et al. Enhanced electromechanical properties of CaZrO3-modified (K0.5Na0.5)NbO3-based lead-free ceramics [J]. Ceramics International,2017,43(9): 7237-7242. [14] TAO H, WU W, WU J. Electrical properties of holmium doped (K,Na)(Nb,Sb)O3-(Bi,Na)HfO3 ceramics with wide sintering and poling temperature range [J]. Journal of Alloys Compounds, 2016, 689(12):759-766. [15] TAO H, WU J. Giant piezoelectric effect and high strain response in (1#8722;x)(K0.45Na0.55)(Nb1#8722;ySby)O3-xBi0.5Na0.5Zr1#8722;zHfzO3 lead-free ceramics [J]. Journal of the European Ceramic Society, 2016, 36(7): 1605-1612. [16] ZHANG M H, WANG K, DU Y J, et al. High and Temperature-Insensitive Piezoelectric Strain in Alkali Niobate Lead-free Perovskite [J]. Journal of the American Chemical Society, 2017, 10(10):3889-3895.

3. 毕业设计（论文）进程安排

2017.12~2018.1 阅读相关文献及资料，了解课题的基本知识及相关背景 2018.1~2018.2 完成外文翻译，对已阅读的文献材料，进行总结，完成开题报告 2018.2~2018.4 进行相关实验内容，并对实验的结果进行分析讨论 2018.4~2018.5 对实验结果进行分析总结，撰写毕业论文 2018.5~2018.6 修改毕业论文及进行毕业答辩