Journal article
Interface engineering of BiFeO3 ferro-resistive memories for sustainable high diode current
Surfaces and interfaces, v 64, 106457
01 May 2025
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Resistive switching, arising from the polarization modulation of the interfacial Schottky barrier in ferroelectric devices, holds promise for information storage applications. However, the performance reliability of such memory devices faces challenges, especially when the diode current is maximized for rapid data processing. Here, we demonstrate a substantial enhancement in the stability of diode current by meticulously selecting electrodes to establish a defect-free interface. This deliberate design effectively mitigates interfacial charge injection to screen the polarization of the ferroelectric BiFeO3 thin film, thereby significantly enhancing the performance of the prototype memory devices. The BiFeO3 devices featuring the epitaxial SrRuO3 electrodes exhibit excellent stability in terms of coercive voltage and current rectification ratio during alternating pulse cycling while maintaining a high diode current density of 0.83 A/cm2 at a bias voltage of -2.2 V. Conversely, metal electrodes facilitates trap formation at the interface for charge injection, which potentially screens the domain switching field and leads to an increased coercive voltage in BiFeO3 devices. Additionally, injected charges can defuse into the interior of the ferroelectric thin film, precipitating polarization degradation and even device breakdown. This work elucidates the critical role of a defect-free interface in achieving sustainable high diode current for ferro-resistive memory.
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Details
- Title
- Interface engineering of BiFeO3 ferro-resistive memories for sustainable high diode current
- Creators
- Dongfang Chen - Drexel UniversityChao Wang - Fudan UniversityJianwei Lian - Fudan UniversityJun Jiang - Fudan University
- Publication Details
- Surfaces and interfaces, v 64, 106457
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:001470949300001
- Scopus ID
- 2-s2.0-105002338665
- Other Identifier
- 991022197311704721
UN Sustainable Development Goals (SDGs)
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Source: SDGs in the Output
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Coatings & Films
- Physics, Applied
- Physics, Condensed Matter