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Multilayer Metal‐Oxide Memristive Device with Stabilized Resistive Switching
Author(s) -
Mikhaylov Alexey,
Belov Alexey,
Korolev Dmitry,
Antonov Ivan,
Kotomina Valentina,
Kotina Alina,
Gryaznov Evgeny,
Sharapov Alexander,
Koryazhkina Maria,
Kryukov Ruslan,
Zubkov Sergey,
Sushkov Artem,
Pavlov Dmitry,
Tikhov Stanislav,
Morozov Oleg,
Tetelbaum David
Publication year - 2020
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201900607
Subject(s) - microscale chemistry , materials science , fabrication , resistive touchscreen , stack (abstract data type) , resistive random access memory , optoelectronics , nanotechnology , nonlinear system , electrode , dielectric , computer science , physics , medicine , alternative medicine , mathematics , mathematics education , pathology , quantum mechanics , computer vision , programming language
Abstract Variability of resistive switching is a key problem for application of memristive devices in emerging information‐computing systems. Achieving a stable switching between the nonlinear resistive states is an important task on the way to implementation of large memristive cross‐bar arrays and solving the related sneak‐path‐current problem. A promising approach is the fabrication of memristive structures with appropriate interfaces by combining the materials of electrodes with certain oxygen affinity and different dielectric layers. In the present work, such approach allows the demonstration of stabilized resistive switching in a multilayer device structure based on ZrO 2 (Y) and Ta 2 O 5 films. It is established for the large‐area devices that the switching is stabilized after several hundreds of cycles. A possible scenario of the stabilization is proposed taking into account experimental data on the presence of grain boundaries in ZrO 2 (Y) as the preferred sites for nucleation of filaments, self‐organization of Ta nanocrystals as the electric field concentrators in Ta 2 O 5 film, as well as oxygen exchange between oxide layers and interface with bottom TiN electrode. The robust resistive switching between nonlinear states is implemented in microscale cross‐point devices without numerous cycling before stabilization promising for the fabrication of programmable memristive weights in passively integrated cross‐bar arrays.