Buffer electrode layers tuned electrical properties, fatigue behavior and phase transition of KNN-based lead-free ferroelectric films

Xu, Liqiang; Zhu, Beibei; Dai, Song; Han, Kun; Chen, Pingfan; Wang, Ke; Huang, Zhen; Wu, Wenbin; Chen, Feng

doi:10.1039/d3tc02743k

J. Mater. Chem. C

2023

DOI: 10.1039/d3tc02743k

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Buffer electrode layers tuned electrical properties, fatigue behavior and phase transition of KNN-based lead-free ferroelectric films

Liqiang Xu,

Beibei Zhu,

Song Dai

et al.

Abstract: This study investigates the impact of different conductive buffer electrode layers on the electrical properties, fatigue behavior and phase transition of epitaxial KNN-based ferroelectric films. Two types of buffer electrode...

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2024

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Interfacial Strain-Insensitive Thermal and Electrical Stability of (K,Na)NbO₃-Based Lead-Free Ferroelectric Films

Zhu,

Kong,

Cheng

et al. 2024

J. Phys. Chem. C

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Despite the inherent strain relaxation in perovskitetype oxide ferroelectric films that occurs beyond a certain thickness, the interfacial states, including carrier and strain, can still influence their electrical properties. This study explores the impact of different (La 0.67 ,Sr 0.33 )MnO 3 (LSMO)-coated perovskite-type oxide substrates on the electrical performance of (K,Na)NbO 3 (KNN)based ferroelectric films. Specifically, 200 nm-thick epitaxial KNNbased films were grown on four distinct substrates: (001)-oriented KTaO 3 , SrTiO 3 , LaAlO 3 , and YAlO 3 . Notably, the lattice constants of the KNN-based films remained unchanged, despite the varying lattice constants of their substrates. The electrical properties of these films were found to be insensitive to the underlying substrate. All films displayed comparable hysteresis loops and frequencydependent dielectric curves, with a consistent remnant polarization of ∼63 μC/cm 2 and a dielectric constant of ∼1250 at 1 kHz. Furthermore, the KNN-based films demonstrated exceptional thermal stability. They showed resilience under multiple switching cycles and maintained stable ferroelectricity up to a high temperature of 100 °C. These observations underscore the high electrical and thermal stability of KNN-based ferroelectric films, suggesting their promising potential for applications in electronic devices. This research highlights the robustness and versatility of KNN-based ferroelectric films, which could pave the way for their integration into advanced electronic technologies.

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Interfacial Strain-Insensitive Thermal and Electrical Stability of (K,Na)NbO₃-Based Lead-Free Ferroelectric Films

Zhu,

Kong,

Cheng

et al. 2024

J. Phys. Chem. C

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show abstract

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Buffer electrode layers tuned electrical properties, fatigue behavior and phase transition of KNN-based lead-free ferroelectric films

Abstract: This study investigates the impact of different conductive buffer electrode layers on the electrical properties, fatigue behavior and phase transition of epitaxial KNN-based ferroelectric films. Two types of buffer electrode...

Cited by 1 publication

References 50 publications

Interfacial Strain-Insensitive Thermal and Electrical Stability of (K,Na)NbO₃-Based Lead-Free Ferroelectric Films

Interfacial Strain-Insensitive Thermal and Electrical Stability of (K,Na)NbO₃-Based Lead-Free Ferroelectric Films

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Buffer electrode layers tuned electrical properties, fatigue behavior and phase transition of KNN-based lead-free ferroelectric films

Abstract: This study investigates the impact of different conductive buffer electrode layers on the electrical properties, fatigue behavior and phase transition of epitaxial KNN-based ferroelectric films. Two types of buffer electrode...

Cited by 1 publication

References 50 publications

Interfacial Strain-Insensitive Thermal and Electrical Stability of (K,Na)NbO3-Based Lead-Free Ferroelectric Films

Interfacial Strain-Insensitive Thermal and Electrical Stability of (K,Na)NbO3-Based Lead-Free Ferroelectric Films

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Product

Resources

About

Interfacial Strain-Insensitive Thermal and Electrical Stability of (K,Na)NbO₃-Based Lead-Free Ferroelectric Films

Interfacial Strain-Insensitive Thermal and Electrical Stability of (K,Na)NbO₃-Based Lead-Free Ferroelectric Films