Electrical properties and microstructures of (Zn and Nb) co-doped BaTiO3 ceramics prepared by microwave sintering
Electrical properties and microstructures of (Zn and Nb) co-doped BaTiO3 ceramics prepared by microwave sintering
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微波烧结制备(Zn、Nb)共掺杂BaTiO3陶瓷的电性能和微观结构
DOI：
10.1016/j.ceramint.2016.01.123
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发表时间：
2016-05
影响因子：
5.2
通讯作者：
Yan Yan
中科院分区：
文献类型：
--
作者：
Yun Yang;Kaihua Liu;Xiaokui Liu;Gang Liu;Chengjie Xia;Zhanbing He;Yan Yan
微波烧结成功地在短保温时间内制备了(Zn,Nb)共掺杂BT陶瓷。检测到四方 BT 是所有样品的主要相。随着ZnNb2O6添加量的增加，Ba2Ti5O12被检测为第二相。 ZnNb2O6与BaTiO3形成固溶体，能有效抑制晶粒长大。铌和锌的共掺杂引起核壳不均匀结构，导致介电常数峰变宽，并向较低温度移动。 ZnNb2O6（小于4.5%）的引入不仅有助于提高致密化，而且有助于降低介电损耗。
Microwave sintering was successfully applied to prepare (Zn, Nb) co-doped BT ceramics in short soaking time. Tetragonal BT was detected as the major phase for all the samples. With increasing ZnNb2O6addition, Ba2Ti5O12was detected as the second phase. ZnNb2O6formed a solid solution with BaTiO3, which is effective to inhibit grain growth. The co-doping with Nb and Zn induced core–shell inhomogeneous structures, resulting in broadened permittivity peaks shifting to lower temperature. The introduction of ZnNb2O6(less than 4.5%) was not only useful to enhance the densification, but also helpful to decrease the dielectric loss.
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