ferroelectric layer的用法和樣例：
例句
- BaTiO3 is one of most widely used ferroelectric materials and has been extensively studied.
鈦酸鋇是應用和研究最多的鐵電體之一。 - It is very different to fabricate pure perovskite phase materials without the appearance of pyrochlore phase in lead based ferroelectric relaxors studies.
鉛基弛豫型鐵電體研究中遇到的普遍問題是難製成純鈣鈦礦相的材料，在製備過程中常伴有焦綠石相的出現。
