非铁电压电复合陶瓷SrTiO3-Bi12TiO20 (ST-BT) 的正电子湮没谱学研究

张丽娟; 王力海; 刘建党; 李强; 成斌; 张杰; 安然; 赵明磊; 叶邦角

doi:10.7498/aps.61.237805

摘要

采用传统陶瓷烧结工艺成功制备出新型非铁电压电复合陶瓷 SrTiO3-Bi12TiO20 (ST-BT),利用正电子湮没技术, 对ST-BT复合陶瓷烧结过程进行了研究, 讨论了烧结过程中材料内部的缺陷变化特征,给出了烧结温度对该复合陶瓷结晶度和缺陷结构的影响. 发现烧结温度在860—940℃,烧结时间为3 h的实验条件下, ST-BT复合陶瓷已趋于稳定,出现了大量的单空位型缺陷.烧结温度超过980℃将引起 Bi12TiO20相的大量分解,杂相的出现造成缺陷的聚集,形成大尺度的微空洞. 实验结果表明,烧结温度在920—940 ℃的烧结条件下, ST-BT复合陶瓷的结构特性及压电性能均表现出较好的稳定性.

关键词:

Abstract

The positron annihilation lifetime spectroscopy, combined with X-ray diffraction and scanning electron microscopy is used to measure a new type of non-ferroelectric piezoelectricity SrTiO3-Bi12TiO20 (ST-BT) composite ceramic, which is prepared by conventional solid-state reaction in Shandong University. The structural characteristics and sinter process for ST-BT composite ceramic are systematically studied. A large number of crystal defects are observed in ST-BT composite ceramic with the sintering temperature being between 860 to 940 ℃. The large scale defects are formed due to the Bi12TiO20 phase decomposed when the sintering temperature rises to 980 ℃. The experimental results indicate that the structural characteristic and piezoelectricity of ST-BT composite ceramic shows good stability with the sintering temperature being between 920 to 940 ℃.

Keywords:

positron lifetime spectrum /
non-ferroelectric piezoelectricity ceramics /
sintering temperature /
structural defects

作者及机构信息

1.
中国科学技术大学近代物理系, 合肥 230026;

2.
山东大学物理学院,晶体材料国家重点实验室, 济南 250100

基金项目: 国家自然科学基金重点项目(批准号: 10835006)、国家自然科学基金(批准号: 51172129) 和国家自然科学基金青年科学基金(批准号: 11105139)资助的课题.

Authors and contacts

1.
Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;

2.
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China

Funds: Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 10835006), the National Natural Science Foundation of China (Grant No. 51172129), and the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 11105139).

参考文献

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施引文献

[1]	Tarumi R, Nakamura K, Ogi H, Hirao M 2007 J. Appl. Phys 102 113508
[2]	Fritze H, Tuller H L 2001 Appl. Phys. Lett. 78 976
[3]	Zhang S J, Fei Y T, Chai B H T, Frantz E, Snyder D W, Jiang X N, Shrout T R 2008 Appl. Phys. Lett. 92 202905
[4]	Davis M J, Vullo P, Mitra I, Blaum P, Gudgel K A, Donnelly N J, Randall C A 2008 J. Am. Ceram. Soc. 91 2878
[5]	Zhou Q F, Sharp C, Cannata J M, Shung K K, Feng G H, Kim E S 2007 Appl. Phys. Lett. 90 112502
[6]	Fousek J, Cross L E, Litvin D B 1999 Mater. Lett. 39 287
[7]	Cross L E 2006 J. Mater. Sci. 41 53
[8]	Zhu W Y, Fu J Y, Li N, Cross L E 2006 Appl. Phys. Lett. 89 192904
[9]	Fu J Y, Zhu W Y, Li N, Smith N B, Cross L E 2007 Appl. Phys. Lett. 91 182910
[10]	Fu J Y, Cross L E 2007 Appl. Phys. Lett. 91 162903
[11]	Zhao M L, Wang L H, Wang C L, Zhang J L, Gai Z G, Wang C M, Li J C 2009 Appl. Phys. Lett. 95 022904
[12]	Zhao M L, Wang L H, Wang C L, Zhang J L, Gai Z G, Wang C M, Li J C 2010 Scripta Materialia 63 207
[13]	Zhang L J, Wang T, Wang L H, Liu J D, Zhao M L, Ye B J 2012 Scripta Materialia 67 61
[14]	Chen Z P, Zhang J C, Cheng G S, Li X G, Zhang X S 2001 Acta Phys. Sin. 50 550 (in Chinese) [陈镇平, 张金仓, 程国生, 李喜贵, 章讯生 2001 物理学报 50 550]
[15]	Chang F G, Song G L, Fang K, Wang Z K 2007 Acta Phys. Sin. 56 6068 (in Chinese) [常方高, 宋桂林, 房坤, 王照奎 2007 物理学报 56 6068]
[16]	Kansy J 1996 Nucl. Instr. Meth. Phys. Res. A 374 235
[17]	Wang S J, Chen Z Q, Wang B, Wu Y C, Fang P F, Zhang Y X 2008 Applied Positron Spectroscopy (Wuhan: Hubei Science and Technology Press) p78 (in Chinese) [王少阶, 陈志权, 王波, 吴弈初, 方鹏飞, 张永学 2008 应用正电子谱学(武汉:湖北科学技术出版社) 第78页]
[18]	Hautojarvi P 1995 Materials Science Forum. 175-178 47
[19]	Brandt W 1974 Appl. Phys. A 5 1
[20]	He Y J, Li L T, Yu W Z, Xiong J J 1984 Journal of the Chinses Ceramic Society 12 1 (in Chinese) [何元金, 李龙土, 郁伟中, 熊家炯 1984 硅酸盐学报 12 1]

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