Formation of noncoil-like inductance in nanocomposites (Fe(0.45)Co(0.45)Zr(0.10))(x)(Al(2)O(3))(1-x) manufactured by ion-beam sputtering of complex targets in Ar+O(2) atmosphere
Artykuł w czasopiśmie
MNiSW
15
Lista A
| Status: | |
| Autorzy: | Żukowski Paweł, Kołtunowicz Tomasz, Węgierek Paweł, Fedotova Julia A., Fedotov Aleksander K., Larkin Andrei V. |
| Rok wydania: | 2011 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 1 |
| Wolumen/Tom: | 120 |
| Strony: | 43 - 45 |
| Web of Science® Times Cited: | 29 |
| Scopus® Cytowania: | 26 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| This paper investigates the inductive contribution to AC conductance in the granular nanocomposites (Fe(0.45)Co(0.45)Zr(0.10))(x)(Al(2)O(3))(1-x). The initial nanocomposites studied were manufactured in Ar+O(2) atmosphere by ion-beam sputtering of the target containing Fe(0.45)Co(0.45)Zr(0.10) and alumina stripes and then subjected to the annealing procedure in air over the temperature range 373 K < T(a) < 873 K. These samples, before and after annealing, were studied using the temperature 77 K < T(p) < 300 K and frequency 50 Hz < f < 1 MHz dependences of a real part of the admittance sigma(T, f). Analysis of the observed sigma(f, T(p)) dependences for x < 0.5 demonstrated that in the studied samples the equivalent circuits with the capacitive and noncoil-like inductive contributions can be accomplished. Just in this case, the capacitive properties of RLC circuit with the phase angle -90 degrees <= theta(L) < 0 degrees are exhibited at low frequencies and the inductive properties with 0 degrees <= theta(H) < 90 degrees become apparent at high frequencies. A value of the critical frequency f(R), where theta(H) changes sign, depends on the metallic phase concentration x, measuring temperature T(p), and annealing temperature T(a). |
