Effects of Fe2O3 doping on the microstructure and piezoelectric properties of 0.55Pb (Ni1/3Nb2/3)O3-0.45Pb(Zr0.3Ti0.7)O3 ceramics
Effects of Fe2O3 doping on the microstructure and piezoelectric properties of 0.55Pb (Ni1/3Nb2/3)O3-0.45Pb(Zr0.3Ti0.7)O3 ceramics
复制标题
DOI：
10.1016/j.matlet.2011.08.038
复制
发表时间：
2012-01-01
影响因子：
3
通讯作者：
Luo, Jun
中科院分区：
文献类型：
--
作者：
Du, Jianzhou;Qiu, Jinhao;Luo, Jun
采用固相烧结法制备了不同掺杂浓度（x = 0.0，0.8，1.2，1.6mol%）的0.55Pb（Ni 1/3 Nb 2/3）O3 -0.45Pb（Zr0.3Ti0.7）O3（PNN-PZT）陶瓷。X射线衍射分析表明，所有样品都是纯钙钛矿相，没有烧绿石相。随着Fe 2 O3掺杂浓度的增加，陶瓷的致密度和晶粒尺寸略有增加。与未掺杂的PNN-PZT陶瓷相比，Fe掺杂的PNN-PZT陶瓷的压电、铁电和介电性能都有明显的提高。在1200 ℃烧结2 h，掺杂量为1.2mol%Fe2O3的样品的压电常数d（33）-956 pC/N，机电耦合系数k（p）接近0.74，介电常数ε（r）接近6095。(C)2011 Elsevier B. V.保留所有权利。
0.55Pb(Ni1/3Nb2/3)O-3-0.45Pb(Zr0.3Ti0.7)O-3(PNN-PZT) ceramics with different concentration of xFe(2)O(3) doping (where x = 0.0, 0.8, 1.2, 1.6 mol%) were synthesized by the conventional solid state sintering technique. X-ray diffraction analysis reveals that all specimens are a pure perovskite phase without pyrochlore phase. The density and grain size of Fe-doped ceramics tend to increase slightly with increasing concentration of Fe2O3. Comparing with the undoped ceramics, the piezoelectric, ferroelectric and dielectric properties of the Fe-doped PNN-PZT specimens are significantly improved. Properties of the piezoelectric constant as high as d(33)-956 pC/N, the electromechanical coupling factor k(p) similar to 0.74, and the dielectric constant epsilon(r) similar to 6095 are achieved for the specimen with 1.2 mol% Fe2O3 doping sintered at 1200 degrees C for 2 h. (C) 2011 Elsevier B.V. All rights reserved.