文中系统地对BaTiO3陶瓷的表面态进行综述,认为表面态确实是PTC效应产生的根源所在,同时对表面态的组成(主要对表面态中金属阳离子空位,氧空位)、微量3d元素对表面受主态的显著影响以及表面态密度的定量计算三方面进行分析,认为表面态研究的难点在于其组成的复杂性,认为用电介质理论定量计算表面态密度存在粗略性问题,同时对表面态的研究前景进行展望.
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