Ba_(0.9)Sr_(0.1)ZrxTi_(1-x)O_3固溶体的合成、结构与性能

Synthesis,Structure and Properties of Ba0.9Sr0.1ZrxTi1-xO3 Solid Solutions

在１００℃以下用软化学掺杂方法，合成了一系列Ｂａ０．９Ｓｒ０．１ＺｒｘＴｉ１－ｘＯ３固溶体纳米粉末。ＸＲＤ物相分析，产品为完全互溶取代固溶体。ＴＥＭ观察表明，粒子为均匀球形，平均粒径６０ｎｍ，通过制陶实验，分别测定了该系列固溶体的室温介电常数和介电损失，结果发现，用化学方法在ＢａＴｉＯ３中掺入适量锶和锆，引起Ｔｃ前移，室温介电常数提高７倍。

A series of Ba0.9Sr0.1ZrxTi1-xO3 (0 x 0.3) solid solutions were synthesized by means of soft chemical method below 100.XRD and d-spacing-component figures of the series of the solid solutions proved that the compounds were mutual miscible in the solid solutions.Through TEM,the product was found to have a shape of uniform,substantially spherical particles with an average particle diamter of 60nm.The result of preparing ceramics showed that adulterating with Sr2+ and Zr4+ in pure BaTiO3 phase obviously improved the dielectric constant and dielectric loss at normal termperature.