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Frequency-Coded Control of the Conductance of Memristors Based on Nanoscale Layers of LiNbO3 and (Co40Fe40B20)x(LiNbO3)100 – x Composite in Trained Spiking Neural Networks

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Abstract

The memristive properties of Cu/nanocomposite/ LiNbO3/Cu capacitor structures based on a (Co40Fe40B20)x(LiNbO3)100 – x nanocomposite and an amorphous LiNbO3 interlayer with thicknesses of about 40 and 20 nm, respectively, have been studied. It was found that these structures have relatively low resistive switching voltages (~2 V) and are capable of withstanding more than 104 cyclic switchings due to the formation of conducting channels in LiNbO3 in fixed regions specified by the position of percolation chains of CoFe nanograins in the nanocomposite. It is shown that the conductance of Cu/nanocomposite/LiNbO3/Cu memristors can vary according to local biosimilar rules. A simple neural network based on such memristors, trained by feeding a frequency-coded noise signal to its inputs, was implemented.

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ACKNOWLEDGMENTS

The research was carried out using the equipment of the Resource Center for Electrophysical Methods of National Research Center “Kurchatov Institute”.

Funding

This work was supported in part by the Russian Science Foundation (grant no. 20-79-10185) in the study of the electrophysical and structural properties of memristive samples and by Russian Federation Presidential Grant MK-2203.2021.1.2 in the part of training a spiking neural network with noise signals.

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Authors and Affiliations

  1. National Research Center “Kurchatov Institute”, 123098, Moscow, Russia

    A. I. Il’yasov, A. V. Emel’yanov, K. E. Nikirui, A. A. Minnekhanov, E. V. Kukueva, I. A. Surazhevskii, A. V. Sitnikov, V. V. Ryl’kov & V. A. Demin

  2. Moscow State University, 119991, Moscow, Russia

    A. I. Il’yasov

  3. Kotelnikov Institute of Radio Engineering and Electronics “Fryazino Branch”, Russian Academy of Sciences, 141190, Fryazino, Moscow oblast, Russia

    V. V. Ryl’kov

Authors
  1. A. I. Il’yasov
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  2. A. V. Emel’yanov
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  3. K. E. Nikirui
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  4. A. A. Minnekhanov
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  5. E. V. Kukueva
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  6. I. A. Surazhevskii
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  7. A. V. Sitnikov
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  8. V. V. Ryl’kov
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  9. V. A. Demin
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Corresponding author

Correspondence to A. I. Il’yasov.

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Translated by E. Chernokozhin

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Il’yasov, A.I., Emel’yanov, A.V., Nikirui, K.E. et al. Frequency-Coded Control of the Conductance of Memristors Based on Nanoscale Layers of LiNbO3 and (Co40Fe40B20)x(LiNbO3)100 – x Composite in Trained Spiking Neural Networks. Tech. Phys. Lett. 47, 656–660 (2021). https://doi.org/10.1134/S1063785021070075

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