以TiCl4为钛源,通过低温固态反应合成了一系列掺杂Ba0.93-xYxSr0.07MnyTi1-yO3纳米固溶体粉末.经XRD物相分析证明,产品为立方晶系的完全互溶取代固溶体.TEM电镜形貌分析,粒子分布较均匀,基本呈规则球形,粒径大约70nm.通过制陶实验,研究了材料的PTC效应,当施主Y和受主Mn的掺杂量分别为1%.和0.04%.(摩尔分数)时,得到了室温电阻37.09Ω左右,升阻比达到2.957×105,电阻温度系数α为23.36%.的性质优良的PTC陶瓷材料.
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