Breaking the Fundamental Limitations of Nanoscale Ferroelectric Characterization: Non-Contact Heterodyne Electrostrain Force Microscopy
Breaking the Fundamental Limitations of Nanoscale Ferroelectric Characterization: Non-Contact Heterodyne Electrostrain Force Microscopy
复制标题
打破纳米级铁电表征的基本限制：非接触外差电应变力显微镜
DOI：
10.1002/smtd.202100639
复制
发表时间：
2021
期刊：
影响因子：
12.4
通讯作者：
Zeng Kaiyang
中科院分区：
文献类型：
--
作者：
Zeng Qibin;Huang Qicheng;Wang Hongli;Li Caiwen;Fan Zhen;Chen Deyang;Cheng Yuan;Zeng Kaiyang
从真实空间感知纳米级铁电现象对于阐明铁电物理具有重要意义。在过去的几十年里，纳米级铁电表征主要依赖于压电响应力显微镜（PFM），然而，PFM的基本局限性使得纳米级铁电研究遇到了重大瓶颈。在这项研究中，首次介绍了一种高分辨率的非接触式铁电测量方法——非接触式外差电应变显微镜（NC-HEsFM）。研究结果明确表明，NC-HEsFM可以在多个本征模式下工作，以实现理想的高分辨率铁电畴映射、标准铁电磁滞回线测量和可控域操作。通过使用石英音叉（QTF）传感器和外差检测，NC-HEsFM显示出前所未有的能力，在可忽略静电力影响的情况下实现真正的非接触、非破坏性铁电特性。相信NC-HEsFM可以广泛应用于各种铁电或压电研究，并提供大幅改善的表征性能。同时，基于qtf的力检测使得NC-HEsFM在高真空和低温环境下具有很高的兼容性，为实现超高空间分辨率来研究最本质的铁电现象提供了理想的条件。
Perceiving nanoscale ferroelectric phenomena from real space is of great importance for elucidating underlying ferroelectric physics. During the past decades, nanoscale ferroelectric characterization has mainly relied on the Piezoresponse Force Microscopy (PFM), however, the fundamental limitations of PFM have made the nanoscale ferroelectric studies encounter significant bottlenecks. In this study, a high-resolution non-contact ferroelectric measurement, named Non-Contact Heterodyne Electrostrain Force Microscopy (NC-HEsFM), has been introduced firstly. It has been unambiguously demonstrated that NC-HEsFM can operate on multiple eigenmodes to perform ideal high-resolution ferroelectric domain mapping, standard ferroelectric hysteresis loop measurement and controllable domain manipulation. With using quartz tuning fork (QTF) sensor and heterodyne detection, NC-HEsFM shows an unprecedented capability in achieving real non-contact yet non-destructive ferroelectric characterization with negligible electrostatic force effect. It is believed that NC-HEsFM can be extensively used in various ferroelectric or piezoelectric studies with providing substantially improved characterization performance. Meanwhile, the QTF-based force detection makes NC-HEsFM highly compatible for high-vacuum and low-temperature environments, providing ideal conditions for achieving an ultra-high spatial resolution to investigate the most intrinsic ferroelectric phenomena.