An Original Positive-Up-Negative-Down Protocol for Electrical Characterization of Antiferroelectric Materials

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-04-14 DOI:10.1021/acs.nanolett.5c00851

Grégoire Magagnin, Martine Le Berre, Sara Gonzalez, Brice Gautier, Damien Deleruyelle, Bertrand Vilquin, Jordan Bouaziz

引用次数: 0

Abstract

This work introduces the AFE-PUND measurement method, an original positive up negative down (PUND) protocol intended to accurately study antiferroelectric (AFE) thin-film behavior. As for its FE counterpart, the AFE-PUND method isolates switching currents from nonswitching contributions, enabling a precise extraction of saturation polarization and coercive fields from hysteresis loop curves. In this paper, AFE-PUND was deployed on AFE ZrO₂ films of varying thicknesses. The results reveal that saturation polarization increases with film thickness, indicating enhanced domain stability, while endurance cycles showcase the wake-up effect and its eventual fatigue-induced degradation in thicker films. Similarly, coercive fields decrease with thickness, reflecting reduced switching barriers and a sharper transition between the tetragonal and orthorhombic phases. AFE-PUND establishes itself as an extremely valuable method for advancing the understanding and optimization of AFE materials.

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用于反铁电材料电特性分析的独创 "正-上-负-下 "协议

本文介绍了AFE-PUND测量方法，这是一种原始的正向上负向下（PUND）协议，旨在准确研究反铁电（AFE）薄膜的行为。对于等效的FE方法，afe - bund方法将开关电流从非开关贡献中分离出来，从而能够从磁滞回线曲线中精确提取饱和极化和矫顽力场。本文将AFE- bund部署在不同厚度的AFE ZrO2薄膜上。结果表明，饱和极化随薄膜厚度的增加而增加，表明区域稳定性增强，而在较厚的薄膜中，耐力循环表现出唤醒效应及其最终的疲劳退化。同样，矫顽力场也随着厚度的增加而减小，这反映了转换势垒的减少以及四方相和正交相之间更明显的转变。AFE- pund是一种非常有价值的方法，可以促进对AFE材料的理解和优化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

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