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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.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 ℃.
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Keywords:
- positron lifetime spectrum /
- non-ferroelectric piezoelectricity ceramics /
- sintering temperature /
- structural defects
[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
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[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 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 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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[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 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 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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