1. 毕业设计（论文）的内容和要求

毕业论文是对大学四年学习情况以及对所做的课题情况的反映,其内容应该包括: （1） 查阅相关文献资料，提出实验计划，明确内容了解课题的研究目的，进行计算，适当调整材料结构模型的氧八面体倾转、阳离子位移和掺杂量，确定其稳定结构。

（2） 探究氧八面体倾转过程中的结构能量变化，找出最稳定合理的结构，对实际样品测试验证，并在此基础上总结实验经验及注意事项，按要求完成毕业论文的写作。

要把毕业论文很好的完成并顺利通过答辩，这就要求学生做到： （1） 认真全面地收集，阅读材料。

2. 参考文献

[1] ROEDEL J, JO W, SEIFERT K T P, et al. Perspective on the Development of Lead-free Piezoceramics[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2009,92(6):1153-1177. [2] NEPPIRAS E A. Piezoelectric ceramics 1971: B. Jaffe, W. R. Cook Jr and H. Jaffe. London and New York: Academic Press. 317 pp., ￡5.50[J]. Journal of Sound and Vibration, 1972,20(4):562-563. [3] GLAZER A M. The classification of tilted octahedra in perovskites[J]. Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 1972,28(11 ):3384-3392. [4] DOVE M T. Theory of displacive phase transitions in minerals[J]. AMERICAN MINERALOGIST, 1997,82(3-4):213-244. [5] CRAWFORD A E. Lead zirconate-titanate piezoelectric ceramics[J]. British Journal of Applied Physics, 1961,12(10):529. [6] ROEDEL J, JO W, SEIFERT K T P, et al. Perspective on the Development of Lead-free Piezoceramics[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2009,92(6):1153-1177. [7] AHART M, SOMAYAZULU M, COHEN R E, et al. Origin of morphotropic phase boundaries in ferroelectrics[J]. Nature, 2008,451:545. [8] ARI-GUR P, BENGUIGUI L. X-ray study of the PZT solid solutions near the morphotropic phase transition[J]. Solid State Communications, 1974,15(6):1077-1079. [9] MABUD S A. The Morphotropic Phase Boundary in PZT Solid Solutions[J]. Journal of Applied Crystallography, 1980,13(3):211-216. [10] RABE K M, RABE K M, AHN C H, et al. Physics of Ferroelectrics: A Modern Perspective[M]. Springer Publishing Company, Incorporated, 2007: 203-234. [11] DAMJANOVIC D. A morphotropic phase boundary system based on polarization rotation and polarization extension[J]. APPLIED PHYSICS LETTERS, 2010,97(0629066). [12] BERLINCOURT D, KRUEGER H H A, JAFFE B. Stability of phases in modified lead zirconate with variation in pressure, electric field, temperature, and composition[J]. Journal of Physics Chemistry of Solids, 1964,25(7):659-674. [13] WANG Y L, CHENG Z M, SUN Y R, et al. Phase transition study of PZT 95/5 ceramics[J]. Physica B c, 1988,150(1):168-174. [14] TRUJILLO S, KREISEL J, JIANG Q, et al. The high-pressure behaviour of Ba-doped Na1/2Bi1/2TiO3 investigated by Raman spectroscopy[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2005,17(41):6587-6597. [15] KNAPP M C, WOODWARD P M. A -site cation ordering in AA′BB′O6 perovskites[J]. Journal of Solid State Chemistry, 2006,179(4):1076-1085. [16] SETTER N, CROSS L E. The Role of B-site Cation Disorder in DPT Behavior of Perovskite Ferroelectrics[J]. Journal of Applied Physics, 1980,51(8):4356-4360. [17] BURTON B P, MCCORMACK R P, TOBY B H, et al. Cation ordering in some ABO3 perovskites[J]. Ferroelectrics, 1997,194(1):187-206. [18] LIU R, XUAN Y, JIA Y Q. A Simple Method for Judging Order or Disorder in A(B′B″)O3 Perovskite Compounds[J]. Journal of Solid State Chemistry, 1997,134(2):420-422.

3. 毕业设计（论文）进程安排

2019.01 根据所选课题，查阅相关文献并完成翻译工作 2019.02-2019.04 建立BNT基材料的结构模型，合理调整氧八面体的倾转，同时注意阳离子的位移状况，确定其结构的稳定状态。

2019.05 整理实验数据 2019.06 在实验基础上撰写毕业论文