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BNT–BT–ST系无铅压电陶瓷的介电与铁电特性

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Abstract:

采用传统固相反应法制备无铅压电陶瓷材料(0.944－x)Na0.5Bi0.5TiO3–0.056BaTiO3–100xSrTiO3(BNT–BT–100xST)。研究材料的相结构、介电、铁电及压电性能。结果表明在研究的组成范围内，陶瓷材料均能形成纯钙钛矿固溶体；当ST摩尔掺量为0.03≤x≤0.04时，该体系陶瓷具有三方–四方准同型相界结构；随着ST掺量增加，晶粒细化，低温介电反常峰θd和高温介电反常峰θm向低温端移动，材料的弥散程度增强。系列陶瓷压电性能较佳x=0.03时，压电常数d33达最大值，为150pC/N；x=0.04时，材料性能较优，相对介电常数εr=4632，介电损耗tanδ=0.01576，剩余极化强度Pr=35μC/cm2，矫顽场Ec=21kV/cm，d33=134pC/N。ST组分的引入进一步优化BNT–BT体系的介电、铁电与压电特性，并探讨铁电–反铁电相变的弛豫特性与作用机制。

 References

[1]  ？ 钟维烈. 铁电体物理学[M]. 北京: 科学出版社, 1996: 320–326, 341–342.
[2]  ZHONG Weilie, Ferroelectrics Physics. Beijing: China Science Press, 1996: 320–326, 341–342.
[3]  ？ DORCET V, TROLLIARD G, BOULLAY P. Reinvestigation of phase transitions in Na0.5Bi0.5TiO3 by TEM. PartⅠ: First order rhombohedral to orthorhombic phase transition [J]. Chem Mater, 2008, 20(15): 5061– 5073.
[4]  ？ JAITANONG N, VITTAYAKORN W C, CHAIPANICH A. Phase development and dielectric responses in PMN–BNT ceramics [J]. Ceram Int, 2010, 36: 1479–1483.
[5]  ？ XU Chenggang, LIN Dunmin, KWOK K W. Structure, electrical properties and depolarization temperature of (Bi0.5Na0.5)TiO3–BaTiO3 lead-free piezoelectric ceramics [J]. Solid State Sci, 2008(10): 934– 940.
[6]  ？
[7]  ？ SMOLENSKII G A, ISUPOV V A, AGRANOVSKAYA A I, et al. New ferroelectrics of complex composition [J]. Sov Phys Solid State, 1961, 2 (11): 2651–2654.
[8]  ？ TAKENAKA T, SAKATA K, TODA K. Piezoelectric properties of (Bi1/2Na1/2)TiO3-based ceramics [J]. Ferroelectrics, 1990, 106: 375– 380.
[9]  ？ OH Teresa, KIM Myung-Ho. Phase relation and dielectric properties in (Bi1/2Na1/2)1？xBaxTiO3TiO3 lead-free ceramics [J]. Mater Sci Eng, 2006, 132: 239–246.
[10]  ？ 杨桂华, 周昌荣. BNT–BKT–BiFeO3无铅压电陶瓷的压电性能和退极化温度[J]. 人工晶体学报, 2009, 38(2): 335–339.
[11]  YANG Guihua, ZHOU Changrong. J Synth Cryst, 2009, 38(2): 335– 339.
[12]  ？ WANG Ting, DU Huiling, SHI Xiang. Dielectric and ferroelectric properties of (1–x)Na0.5Bi0.5TiO3–xSrTiO3 lead-free piezoceramics system [C]//Symposia D, E and F from MRS International Materials Research Conference, Chongqing, China, 2009: 1–7.
[13]  ？ WATANABE Y, HIRUMA Y, NAGATA H, et al. Phase transition temperatures and electrical properties of divalent ions (Ca2+, Sr2+ and Ba2+) substituted (Bi1/2Na1/2)TiO3 ceramics [J]. Ceram Int, 2008, 34: 761– 764.
[14]  ？ 王婷, 杜慧玲, 史翔. La3+掺杂钛酸铋钠基无铅陶瓷的压电性能与介电弛豫行为[J]. 硅酸盐学报, 2009, 37(6): 916–921.
[15]  WANG Ting, DU Huiling, SHI Xiang. J Chin Ceram Soc, 2009, 37(6): 916–921.
[16]  ？ JO Wook, OLLAGNIER Jean-Baptiste, PARK Jong-Lo,et al. CuO as a sintering additive for (Bi1/2Na1/2)TiO3–BaTiO3–(K0.5Na0.5)NbO3 lead- free piezoceramics [J]. J Eur Ceram Soc, 2011, 31: 2107–2117.

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