Presentation Information
[17a-PA1-6]Control of Electrical Resistance by Pulsed Electric Field on LuFe2O4
〇Gyusang Park1, Yuta Yano1, Tomoko Nagata2, Yukimasa Fukada3, Yoichi Okimoto4, Hongwu Yu4, Xiaopu Wang4, Jun Kano1, Takashi Kanbe1, Naoshi Ikeda1 (1.Okayama Univ., 2.Nihon Univ., 3.JAEA, 4.Science Tokyo)
Keywords:
Ferroelectrics
The electric polarization realized through polar charge ordering in electronic ferroelectrics exhibits a response to ultra-low electric fields (~several V/cm), a value roughly 1/1000th of that observed in typical displacement-type ferroelectrics. For this reason, conventional P-E loop characterization is challenging; while polarization reverses at minimal field strengths, the polarization itself is thought to destabilize due to conduction at domain walls.
In this study, we investigated the control of electrical resistance using pulsed electric fields. Our measurements show that specific pulse parameters (duration and amplitude) induce a significant enhancement in electrical resistivity. To understand the origin of this effect, we are investigating the changes in superlattice reflection intensity. We hypothesize that the observed resistance changes originate from variations in electronic ferroelectric domains and the modulation of domain boundaries. By applying this mechanism, we have confirmed non-volatile memory operation, characterized by the retention of distinct resistance states toggled by pulsed electric fields.
In this study, we investigated the control of electrical resistance using pulsed electric fields. Our measurements show that specific pulse parameters (duration and amplitude) induce a significant enhancement in electrical resistivity. To understand the origin of this effect, we are investigating the changes in superlattice reflection intensity. We hypothesize that the observed resistance changes originate from variations in electronic ferroelectric domains and the modulation of domain boundaries. By applying this mechanism, we have confirmed non-volatile memory operation, characterized by the retention of distinct resistance states toggled by pulsed electric fields.