采用固相反应法在1400℃合成了CaZr1-xInxO3-a(x=0,0.05,0.10,0.15)陶瓷粉体,在空气中1550℃,10h对材料进行二次烧结.XRD物相分析结果确定合成后的样品中有CaZrO3和微量CaIn2O4存在.实验在600～850℃含水氩气中测量了样品的交流阻抗谱,计算出其电导率随温度变化的规律和电导激活能.在800℃时,CaZn-xInxO3-a的电导率分别为4.64× 10-7 S/cm(x=0)、3.06×10-4 S/cm(x=0.05)、3.89×10-4 S/cm(x=0.10)、3.93×10-4 S/cm (x=0.15).研究结果表明:对CaZrO3掺In能显著提高材料的电导率,降低电导激活能,掺杂量x＞0.1时,电导率增加变缓,并且电导率随温度的升高而增大.研究得到CaZr1-xInxO3-a的电导率与掺杂量的关系式.
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