Determination of the Percolation Threshold for (FeCoZr)x(SiO2)(100−x) Nanocomposite
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MNiSW
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Poziom I
| Status: | |
| Autorzy: | Bondariev Vitalii |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Arkusze wydawnicze: | 0,56 |
| Język: | angielski |
| Strony: | 343 - 351 |
| Scopus® Cytowania: | 0 |
| Bazy: | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| This work presents an explanation of the effect of metallic phase content x on AC electrical properties of nanocomposites (FeCoZr)x(SiO2)(100−x) and determination of the percolation threshold for series of nanocomposite samples with metallic phase content x = 48.3–82.8 at.%. Frequency and temperature dependencies of conductivity σ(f, T) and phase shift angle θ(f, T) for series of nanocomposite produced by ion-beam sputtering in pure argon atmosphere were determined. Samples with metallic phase content x < 79.8 at.% exhibit dielectric type of conductivity dσ/dT > 0. Increase in concentration of metallic phase x ≥ 79.8 at.% causes a change of conductivity character from dielectric to metallic dσ/dT < 0. Comparison of the conductivity at Tp = 20 K and conductivity at room temperature allowed to determine the percolation threshold for a series of samples of nanocomposite (FeCoZr)x(SiO2)(100−x). Metallic phase particles form the “endless cluster” that crosses though sample from the electrode to electrode in nanocomposites with x ≥ 80 at.%. |
