Electric properties of nanostructure (FeCoZr)(x)(CaF2)((100-x)) produced in argon Ar atmosphere
Fragment książki (Materiały konferencyjne)
MNiSW
15
WOS
| Status: | |
| Autorzy: | Bondariev Vitalii, Czarnacka Karolina, Boiko Oleksandr |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Arkusze wydawnicze: | 0,5 |
| Język: | angielski |
| Strony: | 1282 - 1288 |
| Web of Science® Times Cited: | 0 |
| Scopus® Cytowania: | 0 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | TAK |
| Nazwa konferencji: | Conference on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments |
| Termin konferencji: | 25 maja 2015 do 31 maja 2015 |
| Miasto konferencji: | Wilga |
| Państwo konferencji: | POLSKA |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| The paper presents frequency f and temperature T-p dependences of conductivity sigma, capacitance C-p and phase shift angle. for the nanocomposite metal-dielectric (FeCoZr)(x)(CaF2)((100-x)). Samples of nanocomposite were produced by ion-beam sputtering in pure argon Ar atmosphere. Partial pressure of gas Ar in the ion source p(Ar)= 1.1.10(-1)Pa. Contains of metallic phase in tested sample is x = 54.6 at.%. Studies carried out by stand to measuring of AC electrical properties of nanocomposites and semiconductors. The measurements have been performed using alternating current within the frequency range of 50 Hz - 1 MHz for measuring temperatures ranging from 77 K to 373 K. On the frequency-temperature dependence of phase shift angle. at low frequencies phase shift have capacitive character and at high frequencies - inductive. Position of f(min) on the frequency dependence on capacitance C-p corresponds exactly to the resonance frequency f(R) for which the angle theta crosses zero. Analysis of the results showed that phenomena similar to phenomena in conventional circuit RLC occur in the nanocomposite (CoFeZr)(54.6)(CaF2)(45.4). Jumping recharging between the defects leads to the formation of dipoles and consequently to the increase of permittivity. After a time tau electron returns to the first defect and dipole disappears. The formation of inductance in nanocomposite is associated with return jumps of electrons from defect with negative charge to the defect with positive charge, set by the time, which are characterized by low values of activation energy. |
