摘要：研究 了 Ti⁴⁺离 子 对 PbZrO₃ 和 Pb（Zr_1-xTix）O₃ 粉体晶格结构的影 响。 利用固相反应法合成的 PbZrO₃ 和 Pb（Zr_0.95Ti_0.05）O₃ 粉体，从 XRD、 晶 格 常 数 和 Raman 光 谱 3 个方面进行了分析。 结 果 表 明：PbZrO₃ 和 Pb （Zr_0.95Ti_0.05）O3 均为钙钛矿结构， 但较之 PbZrO₃，Pb （Zr_0.95Ti_0.05）O₃ 的 XRD 谱各个峰位均向高角度轻微偏移；晶胞参数变小；Pb（Zr_0.95Ti_0.05）O₃的 Raman 峰除在低频区向低频方向发生了偏移，而其余峰均向高频方 向发生了偏移且部分峰有宽化现象。 主要是由于 Ti4+离子部分取代 Zr⁴⁺离子进入 PbZrO₃ 晶格而形成 Pb（Zr_1-xTi_x）结构。 关键词：粉体；晶格结构；固相反应

Abstract： The effect of Ti⁴⁺ ions on the crystal structure of PbZrO₃ and Pb（Zr_1-x Ti_x）O₃ powder synthesized by the solid-state reaction method were studied. The effect of Ti4+ addition on the crystal structure of PbZrO₃ and Pb（Zr_0.95Ti_0.05）O₃ powder was analyzed and characterized by XRD， lattices parameter and Raman spectrum. The results indicated that PbZrO₃ and Pb（Zr_0.95Ti_0.05）O₃ powder showed the formation of perosvike phase. A small shift to high angle in the peak intensity position could be seen in the Pb（Zr_0.95Ti_0.05）O₃ and all the lattices parameter became smaller compared to PbZrO₃. Except that the Raman peak in the low frequency shifted to the low er wave numbers，the others shifted to relatively higher wave numbers and a few peaks became broaden. The reason was that the substitution Ti⁴⁺ for Zr⁴⁺ in the PbZrO₃ crystal lattice induced the formation of Pb（Zr_1-xTi_x）O₃. 

Keywords：powder；crystal structure；solid-state reaction