Influence of Zn substitution on the crystal structures and microwave dielectric properties of Li2(Mg1-xZnx)3TiO6 (0≤x≤0.2) ceramics
作者:C.H. Yang、H.L. Pan、Y.K. Yang、H.T. Wu
DOI:10.1016/j.jallcom.2018.06.074
日期:2018.10
Li2(Mg1-xZnx)3TiO6 (x = 0, 0.05, 0.10, 0.15, 0.2) ceramics were formed via the conventional solid-state process. Influence of Zn2+ on the crystal structures, phase compositions, sintering characteristics and properties of Li2(Mg1-xZnx)3TiO6 (0 ≤ x ≤ 0.2) ceramics were systematically studied. XRD results showed that a single phase with the cubic rock-salt structure was formed for Li2(Mg1-xZnx)3TiO6 (0 ≤ x ≤ 0.15)
摘要 采用常规固相工艺制备了一系列Zn掺杂Li2(Mg1-xZnx)3TiO6 (x = 0, 0.05, 0.10, 0.15, 0.2)陶瓷。系统研究了Zn2+对Li2(Mg1-xZnx)3TiO6(0≤x≤0.2)陶瓷的晶体结构、相组成、烧结特性和性能的影响。XRD结果表明,Li2(Mg1-xZnx)3TiO6(0≤x≤0.15)形成了立方岩盐结构的单相,随着Zn2+含量的进一步增加,可以检测到Zn2TiO4的第二相。为了研究Mg/Zn O键的这些参数与微波介电特性之间的相关性,计算了一些内在参数。随着Zn2+含量的增加,最佳er值呈现增加趋势,这可以通过 Mg/Zn O 键的极化率和键离子性的变化来解释。Li2(Mg1-xZnx)3TiO6 (x = 0, 0.05, 0.10, 0.15, 0.2)陶瓷的最大Q·f值的降低可以通过Mg/Zn O键的填充率和晶格能的降低来预测。τƒ