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arXiv · 2608.22755

A Novel Decoupling Method for Investigating Distinct Domain Evolution in Ferroelectric Film

Keying Sun·Jiajun Qiu·Hao Li·Zongwei Shang·Lang Zeng·Ming Li·Lining Zhang·Runsheng Wang
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Abstract

Conventional polarization characterization techniques provide only the averaged response of ferroelectric films, limiting the investigation of domain-dependent reliability mechanisms in HfO2-based ferroelectrics. In this work, a new domain decoupling method is proposed to separately analyze ferroelectric domains with distinct switching behaviors. A three-domain model consisting of upward non-switchable domains, downward non-switchable domains, and switchable domains (Pd) is first introduced to describe heterogeneous domain populations during electrical cycling. By combining complementary switching-current measurements, the responses of different domain populations can be selectively extracted and reconstructed. The proposed method enables quantitative tracking of individual domain populations during cycling. As a demonstration, the method is further applied to analyze the time-dependent evolution of domain populations after electrical cycling. This approach provides a new route for investigating imprint, fatigue, and other reliability-related phenomena in ferroelectric devices.

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Keying Sun, Jiajun Qiu, Hao Li, Zongwei Shang, Lang Zeng, Ming Li, Lining Zhang, Runsheng Wang. 2026-08-24. A Novel Decoupling Method for Investigating Distinct Domain Evolution in Ferroelectric Film. https://arxiv.org/abs/2608.22755

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