Freestanding Flexible Vortex Tubes Integrated With Ferroelectric Transistor
Abstract
ABSTRACT Polar topologies hold great potential in information storage. So far, thin films with polar topological structure are predominantly constrained by the substrate on which they are grown. Such substrate‐stabilized polar topologies limit their integration into memory devices, and consequently, their physical behaviors in data memory remain unclear. Here, we show a ferroelectric field‐effect transistor (Fe‐FET) memory device, which is based on large‐scale freestanding pure polar vortex tube arrays. In situ heating demonstrates that vortex tube arrays in freestanding superlattices undergo a more directly reversible phase transition, evolving from vortex tubes to single domains and ultimately to the disappearance of ferroelectricity. The flexible vortex tubes, which are obtained by removing the sacrificial layers, could bend at a 90° without breaking, demonstrating the nature of robustness. The Fe‐FET exhibits a wide and stable clockwise hysteresis loop, spanning a voltage range of −60 to 60 V and temperatures from room temperature to 450 K. Due to the stable and robust ferroelectric vortex dipole moment arrays, the Fe‐FET achieves a memory retention time of 3600 s and an endurance of 10 4 cycles.
Article Details
Authors (16)
Feng‐Hui Gong
Bay Area Center for Electron Microscopy Songshan Lake Materials Laboratory Dongguan Guangdong China
Lei Tang
Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering
Yu‐Ting Chen
Bay Area Center for Electron Microscopy Songshan Lake Materials Laboratory Dongguan Guangdong China
Jincheng Zhu
State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and Engineering Zhejiang University Hangzhou Zhejiang China
Xiaowei Wang
Jing‐Hui Wang
Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang China
Shuai‐Shuai Yin
Shanghai Synchrotron Radiation Facility (SSRF) Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai China
Su‐Zhen Liu
Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang China
Xiao‐Long Li
Shanghai Synchrotron Radiation Facility (SSRF) Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai China
Xue‐Rong Liu
School of Physical Science and Technology ShanghaiTech University Shanghai China
Yu‐Jia Wang
Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang China
Yun‐Long Tang
Shenyang National Laboratory For Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang China
Zijian Hong
Qi‐Jie Liang
Department of Functional Nanomaterials and Devices Songshan Lake Materials Laboratory Dongguan Guangdong China
Yin‐Lian Zhu
Dongguan Institute of Materials Science and Technology Chinese Academy of Sciences Dongguan China
Xiu‐Liang Ma
Dongguan Institute of Materials Science and Technology Chinese Academy of Sciences Dongguan China