| Autor: |
Martyshov, M. N., Emelyanov, A. V., Demin, V. A., Nikiruy, K. E., Minnekhanov, A. A., Nikolaev, S. N., Taldenkov, A. N., Ovcharov, A. V., Presnyakov, M. Yu., Sitnikov, A. V., Vasiliev, A. L., Forsh, P. A., Granovskiy, A. B., Kashkarov, P. K., Kovalchuk, M. V., Rylkov, V. V. |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Applied 14, 034016 (2020) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevApplied.14.034016 |
| Popis: |
Resistive and capacitive switching in capacitor metal/nanocomposite/metal (M/NC/M) structures based on (CoFeB)x(LiNbO3)100-x 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. The NC films, along with metal nanogranules of 3-6 nm in size, contained a large number of dispersed Co (Fe) atoms (up to ~10^22 cm^-3). 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 (RS) 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. The proposed model is confirmed by investigations of RS of two-layer nanoscale M/NC/LiNbO3/M structures as well as by studies of the magnetization of M/NC/M structures in the pristine state and after RS. |
| Databáze: |
arXiv |
| Externí odkaz: |
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