用3种不同方法测量了钛酸钡微晶粉料在铁电相变过程中表观介电常数的变化.用理论模型说明了不显露出宏观的介电常数居里峰的原因.对钛酸钡的测量证实了理论结果.按理论预言,测量了钛酸锶钡粉料与水混合成两相不均匀系的相变介电峰,实验结果与理论公式符合得很好.实验还表明,用TSC方法可以很好地观察到粉料的极性相变.
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