采用传统固相法制备了Mn,Co单掺杂以及共掺杂的0.85BNT-0.10BKT-0.05BT(BNKBT)无铅压电陶瓷,并利用XRD,SEM等测试分析技术系统研究了Mn,Co单掺杂以及共掺杂对该无铅陶瓷体系相结构,微观形貌和介电性能以及铁电性能的影响.实验结果表明:Mn,Co单掺杂以及共掺杂引起钙钛矿晶格的畸变,但并不造成第二相的形成.SEM观察显示,Mn和Co元素的引入均促进了陶瓷晶粒的生长,提高了陶瓷致密度.此外,通过电学性能测试发现,Mn,Co单掺杂以及两者共掺杂均提高了陶瓷材料的介电常数εr,降低了介质损耗tanδ及矫顽场Ec；尤其是Mn/Co共掺杂的陶瓷样品一定程度提高了铁电-反铁电相变所对应的温度,即退极化温度Td,表现出了较Mn和Co两元素单一掺杂样品更优越的弛豫特性.
参考文献
| [1] | SMOLENSKII G A;ISUPOV V A;AGRANOVSKAYA A I .New Ferroelectrics of Complex Composition[J].Soy Phys Solid Stat,1961,2(11):2651-2654. |
| [2] | Nagata H;Yoshida M;Makiuchi Y;Takenaka T .Large piezoelectric constant and high Curie temperature of lead-free piezoelectric ceramic ternary system based on bismuth sodium titanate-bismuth potassium titanate-barium titanate near the morphotropic phase boundary[J].Japanese journal of applied physics,2003(12):7401-7403. |
| [3] | 陈敏,肖定全,孙勇,吴浪,赁敦敏,朱建国.钛酸铋钠基无铅压电陶瓷研究近期进展[J].功能材料,2007(08):1229-1233. |
| [4] | 信辉,李全禄,厚娜,杨桂考,马晴.Na0.5Bi0.5TiO3基无铅压电陶瓷研究与应用的新进展[J].硅酸盐通报,2008(03):532-536,541. |
| [5] | TAKENAKA T;MARUYAMA K;SAKATA K .Na0.5Bi0.5TiO3-BaTiO3 system for lead-free piezoelectric ceramics[J].Japanese Journal of Applied Physics,1991,30(9B):2236-2239. |
| [6] | Elkechai O.;Mercurio JP.;Manier M. .NA0.5BI0.5TIO3-K0.5BI0.5TIO3 (NBT-KBT) SYSTEM - A STRUCTURAL AND ELECTRICAL STUDY[J].Physica Status Solidi, A. Applied Research,1996(2):499-506. |
| [7] | Fan GF;Lu WZ;Wang XH;Liang F .Morphotropic phase boundary and piezoelectric properties of (Bi1/2Na1/2)TiO3-(Bi1/2K1/2)TiO3-KNbO3 lead-free piezoelectric ceramics[J].Applied physics letters,2007(20):22908-1-22908-3-0. |
| [8] | Nagata H;Yoshida M;Makiuchi Y;Takenaka T .Large piezoelectric constant and high Curie temperature of lead-free piezoelectric ceramic ternary system based on bismuth sodium titanate-bismuth potassium titanate-barium titanate near the morphotropic phase boundary[J].Japanese journal of applied physics,2003(12):7401-7403. |
| [9] | Yuji Hiruma;Hajime Nagata;Tadashi Takenaka .Phase Transition Temperatures and Piezoelectric Properties of (Bi_(1/2)Na_(1/2))TiO_3-(Bi_(1/2)K_(1/2))TiO_3-BaTiO_3 Lead-Free Piezoelectric Ceramics[J].Japanese journal of applied physics,2006(9b):7409-7412. |
| [10] | HU HC;ZHU MK;XIE F .Effect of Co2O3 Additive on Structure and Electrical Properties of (Bi1/2 Na1/2) TiO3-12 (Bi1/2 K1/2)TiO3-3BaTiO3 Lead-Free Piezoceramics[J].Journal of the American Ceramic Society,2009,92:2039. |
| [11] | XU Q;CHEN M;CHEN W .Effect of CoO additive on structure and electrical properties of (Na0.5 Bi0.5)0.93 Ba0.07 TiO3 ceramics prepared by the citrate method[J].Acta Materialia,2008,56:642. |
| [12] | M.A.Pena;J.L.G.Fierro .Chemical structures and performance of perovskite oxides[J].Chemical Reviews,2001(7):1981-2017. |
| [13] | SHEBANOV L A;KASPOSTINS P;ZVIRGZDS J .The structure change of PMN in the diffuse phase transition region[J].Ferroelectrics,1984,56:53-56. |
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