摘要
采用传统的固相反应法,制备了掺入Y_2O_3的BaTiO_3-ZnO陶瓷,通过对所制备陶瓷样品结构、常温介电、压电、铁电性能的分析发现:与未掺入Y_2O_3的BaTiO_3-ZnO陶瓷相比,Y_2O_3的掺入减小了BaTiO_3-ZnO陶瓷的径向收缩率、密度和晶胞体积,同时使材料的晶系结构由立方相转变为四方相结构,Y^(3+)进入BaTiO_3-ZnO陶瓷晶格中并与之形成了固溶体;Y_2O_3的掺入可以提高样品的矫顽场(Ec),但对材料压电系数变化不大,介电常数总体在减小,当未掺入Y_2O_3时,样品的介电常数最大(ε′=2577),样品的介电损耗最小(tanδ=0.0083)。
Traditional solid-phase reaction was used for the preparation of（1-x%-6%）BaTiO3＋6（at）% ZnO＋x （at）%Y2O3 （x=0.05, 0.10,0.15, 0.20）ceramics. XRD equipment, PM300 piezoelectric analyzer and TF2000 ferroelectric analyzer were used for testing the structure,dielectric,piezoelectricity and ferroelectric properties of samples. The following conclusions can be drawn： compared with BaTiO3-ZnO ceramics without Y2O3,the radial shrinkage rate,density and cell volume of BaTiO3-ZnO ceramics were decrease when Y2O3 is doped. At the same time,the crystal structure of material phase transforms from cubic structure to tetragonal structure;Y2O3 doped can increase the coercive field and dielectric loss of the samples,but a little change on the piezoelectric coefficient of materials, and reduce the dielectric constant of BaTiO3-ZnO ceramics. Pure BaTiO3-ZnO ceramics have maximum dielectric constant （ε′= 2577）, minimum dielectric loss （tanδ=0.0083）.
作者
康永
Kang Yong(Shanxi Jintai chlor-alkali chemical Co. ,Ltd. , Yulin 718100 , China)
出处
《山东陶瓷》
CAS
2018年第2期15-20,共6页
Shandong Ceramics
关键词
固相反应法
晶胞体积
径向收缩率
矫顽场
压电系数
介电损耗
Solid State Reaction
Cell Volume
Radial Shrinkage
Coercive Field
Piezoelectric Coeff-icient
Dielectric Loss
