Article
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Low Temperature Fabrication of BiFeO3 Films on Aluminum Foils under an N2-Rich Atmosphere
Version 1
: Received: 11 August 2024 / Approved: 12 August 2024 / Online: 12 August 2024 (11:40:04 CEST)
How to cite: Yan, J. Low Temperature Fabrication of BiFeO3 Films on Aluminum Foils under an N2-Rich Atmosphere. Preprints 2024, 2024080798. https://doi.org/10.20944/preprints202408.0798.v1 Yan, J. Low Temperature Fabrication of BiFeO3 Films on Aluminum Foils under an N2-Rich Atmosphere. Preprints 2024, 2024080798. https://doi.org/10.20944/preprints202408.0798.v1
Abstract
To be CMOS-compatible, a low preparation temperature (< 500 °C) of ferroelectric films is required. In this study, BiFeO3 films were successfully fabricated at a low annealing temperature (< 450 °C) on aluminum foils by a metal-organic decomposition process. The annealing atmosphere on performance of BiFeO3 films was assessed at 440 ± 5℃. By replacing an O2-rich atmosphere with an N2-rich one, a better crystalline morphology was achieved in BiFeO3 films, resulting in better electric properties targeted for high-density ferroelectric random-access memory applications. These properties included a large remnant polarization (Pr~78.1 μC/cm2 @ 1165.2 kV/cm) and a high rectangularity (~91.3% @ 1165.2 kV/cm) of the P-E loop, along with excellent charge-retaining ability up to 1.0 × 103 s and a fatigue resistance reaching 1.0 × 109 switching cycles. The enhanced performance of BiFeO3 film in an N2-rich atmosphere maybe originated from the slightly high content of oxygen vacancies during the annealing process. Furthermore, decent electrical properties (Pr~70 μC/cm2 @ 1118.1 kV/cm) of the BiFeO3 films were achieved at a very low annealing temperature of 365 ±5 °C on aluminum foil substrates. These results offer a new idea for lowering the annealing temperature for integrated ferroelectrics in high-density FeRAM applications.
Keywords
BiFeO3; Aluminum foil; N2-rich atmosphere; Electric properties
Subject
Chemistry and Materials Science, Ceramics and Composites
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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