Baza Publikacji Pracowników Politechniki Lubelskiej

Status:
Autorzy:	Kołtunowicz Tomasz, Żukowski Paweł, Fedotova Vera V., Saad Anis M., Fedotov Aleksander K.
Rok wydania:	2011
Wersja dokumentu:	Drukowana \| Elektroniczna
Język:	angielski
Numer czasopisma:	1
Wolumen/Tom:	120
Strony:	39 - 42
Impact Factor:	0,444
Web of Science® Times Cited:	32
Scopus® Cytowania:	24
Bazy:	Web of Science \| Scopus
Efekt badań statutowych	NIE
Materiał konferencyjny:	NIE
Publikacja OA:	NIE
Abstrakty:	angielski
	We report the investigation of a real part of the admittance sigma of granular nanocomposites (Fe(0.45)Co(0.45)Zr(0.10))(x)(Al(2)O(3))(1-x) with 0.30 < x < 0.70 in the dielectric (hopping) regime. An analysis of the sigma(T, f, x) dependences in the as-deposited and annealed films over the temperature 77 K < T < 300 K and frequency 50 < f < 10(6) Hz ranges displayed the predominance of an activation (hopping) conductance mechanism with d sigma/dT > 0 for the samples below the percolation threshold x(C) approximate to 0.76 +/- 0.05. Based on the earlier models for hopping AC conductance, computer simulation of the frequency coefficient alpha(f) of hopping conductance depending on the probability of jump p, frequency f, and also on the shape of sigma(f) curve was performed. The experimental and simulation results revealed a good agreement.

Hopping conductance 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 target in Ar+O(2) Ambient Gas