Obtaining of hydroxylated fullerenes Y@C82Ox(OH)y, Y2@C82Ox(OH)y, Y2C2@C82Ox(OH)y and electrophysical characteristic of composite film based thereon
View/ Open:
URI (for links/citations):
https://www.tandfonline.com/doi/full/10.1080/1536383X.2018.1501559https://elib.sfu-kras.ru/handle/2311/129373
Author:
Churilov, G. N.
Dudnik, A. I.
Drokin, N. A.
Vnukova, N. G.
Tomashevich, E. V.
Bondarev, V. S.
Corporate Contributor:
Институт инженерной физики и радиоэлектроники
Базовая кафедра физики твердого тела и нанотехнологий
Date:
2019-06Journal Name:
Fullerenes, Nanotubes and Carbon NanostructuresJournal Quartile in Scopus:
Q2Journal Quartile in Web of Science:
Q4Bibliographic Citation:
Churilov, G. N. Obtaining of hydroxylated fullerenes Y@C82Ox(OH)y, Y2@C82Ox(OH)y, Y2C2@C82Ox(OH)y and electrophysical characteristic of composite film based thereon [Текст] / G. N. Churilov, A. I. Dudnik, N. A. Drokin, N. G. Vnukova, E. V. Tomashevich, V. S. Bondarev // Fullerenes, Nanotubes and Carbon Nanostructures. — 2019. — Т. 26 (№ 12). — С. 799-803Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Abstract:
The paper presents, for the first time, the results of the research on composite film obtained from hydroxylated endohedral metallofullerenes (EMF) Y@C82, Y2@C82, with Y2C2@C82 and highest fullerenes as dopant. The composite film has been established to have electric conductivity and to be a ferroelectric with the value of residual polarization of ~0.75 μC/cm2. The impedance spectroscopy of the this sample allowed us to determine dispersion of dielectric permittivity and conductivity in the range of frequencies of 0.5 Hz-100 MHz. It is stated that the value of the high-frequency dielectric permittivity of films is ′=2.8. However with reduction in the electric field frequency real and imaginary parts of ε increase to values ~104-105. Such increase in dielectric permittivity is connected with increase in polarizing caused by accumulation of mobile electric charges (electrons of ions, protons) on boundaries of the structural defects of a film, which are divided by thin dielectric interlayers. The film is solid electrolyte with the ionic conductivity of ~5•10-7 S/cm.