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A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
Published on: April 8, 2018
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Ultra-wide temperature electronic synapses based on self-rectifying ferroelectric memristors
Nan Yang1, Zhong-Qi Ren1, Chuan-Zhu Hu1
1Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronics, East China Normal University, Shanghai 200241, People's Republic of China.
Nanotechnology
|August 20, 2019
Summary
High-Curie temperature ferroelectric memristors, specifically BiFeO3 (BFO), demonstrate robust synaptic functions across an ultra-wide temperature range. These devices overcome limitations of conventional memristors for harsh environment applications.
Area of Science:
- Materials Science
- Solid State Physics
- Nanotechnology
Background:
- Memristors are key components for advanced computing but struggle with extreme temperature operation.
- Harsh environments necessitate memristors with stable performance across wide temperature ranges.
Purpose of the Study:
- To develop memristors capable of functioning in extreme temperatures.
- To investigate the potential of high-Curie temperature ferroelectrics for ultra-wide temperature synaptic applications.
Main Methods:
- Fabrication and characterization of BiFeO3 (BFO)-based ferroelectric memristors.
- Correlation of electronic transport with ferroelectric properties via current and domain distribution visualization.
- Testing of synaptic functions across a wide temperature spectrum (-170 °C to 500 °C).
Main Results:
- BFO ferroelectric memristors exhibit excellent synaptic learning and memory functions from -170 °C to 300 °C, extendable to 500 °C.
- Robust resistance switching behavior is attributed to interfacial barrier modification by ferroelectric polarization reversal.
- Demonstrated realization of various synaptic functions, including LTP/LTD and STDP, over the ultra-wide temperature range.
Conclusions:
- BFO ferroelectric memristors offer a viable solution for ultra-wide temperature operation.
- These memristors are promising for electronic synapses in extreme or harsh environments.
- The study establishes a strong link between ferroelectric properties and memristive behavior for temperature-resilient devices.
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