Epitaxial Strain-Enhanced Ferroelectric Film

4× polarization enhancement

Using an SAO buffering layer to continuously tune epitaxial strain, overcoming the polarization bottleneck of BTO films and significantly boosting the on/off ratio of ferroelectric tunnel junctions.

Li, Xiaoqi · Liu, Jiaqi · Huang, Jianqi · Huang, Biaohong · Li, Lingli · Li, Yizhuo · Hu, Wentao · Li, Changji · Ali, Sajjad · Yang, Teng · Xue, Fei · Han, Zheng · Tang, Yunlong · Hu, Weijin · Zhang, Zhidong

ACS Nano 2024

Specifications

coefficient of polarization

{'zh': '27', 'en': '~27'} μC/cm² per

Giant polarization

{'zh': '约 80', 'en': '~80'} μC/cm²

Advantages

Giant tunneling electroresistance of ~10⁵ in SAO-buffered Pt/BTO/LSMO ferroelectric tunnel junctions