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29 March 2024
 
  » arxiv » 1912.3726

 Article overview


Multifilamentary character of anticorrelated capacitive and resistive switching in memristive structures based on (CoFeB)x(LiNbO3)100-x nanocomposite
M.N. Martyshov ; A.V. Emelyanov ; V.A. Demin ; A.A. Minnekhanov ; S.N. Nikolaev ; K.E. Nikiruy ; A.V. Ovcharov ; M.Yu. Presnyakov ; A.V. Sitnikov ; A.L. Vasiliev ; P.A. Forsh ; A.B. Granovskiy ; P.K. Kashkarov ; M.V. Kovalchuk ; V.V. Rylkov ;
Date 8 Dec 2019
AbstractResistive and capacitive switching in capacitor metal/nanocomposite/metal structures based on (CoFeB)x(LiNbO3)100-x nanocomposite (NC) fabricated by ion-beam sputtering with metal content x $approx$ 8-20 at. % is studied. The peculiarity of the structure synthesis was the use of increased oxygen content ($approx$ 2*10^-5 Torr) at the initial stage of the NC growth. Measurements were performed both in DC and AC (frequency range 5-13 MHz) regimes. When switching structures from high-resistance (Roff) to low-resistance (Ron) state, the effect of a strong increase in their capacity was found, which reaches 8 times at x $approx$ 15 at. % and the resistance ratio Roff/Ron $approx$ 40. The effect is explained by the synergetic combination of the multifilamentary character of resistive switching and structural features of the samples associated, in particular, with the formation of high-resistance and strongly polarizable LiNbO3 layer near the bottom electrode of the structures.
Source arXiv, 1912.3726
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