Temperature dependences of ferroelectricity and resistive switching behavior of epitaxial BiFeO3 thin films
Lu Zeng-Xinga), Song Xiaoa), Zhao Li-Naa), Li Zhong-Wena), Lin Yuan-Bina), Zeng Mina), Zhang Zhanga), Lu Xu-Binga), Wu Su-Juana), Gao Xing-Sen†a), Yan Zhi-Bob), Liu Jun-Ming‡b)
       
Temperature dependences of I – V and P – V loops: (a) semi-logarithmic I – V curves at a bias sweeping-rate of 3 V/s, and (d) P – V hysteresis loops at 5 kHz. Here, OCV stands for open circuit voltage, PS denotes the current hump due to the displacement transient current related to polarization switching, and NRS represents the new resistive switching at high bias voltage range.