Open AccessElectrophysical and Morphological Properties of a Hydrothermally Synthesized CuFe2O4 and CuFe2O4 / Reduced Graphene Oxide Composite
Author(s) -
Volodymyr Kotsyubynsky,
Volodymyra Boychuk,
Ruslan Zapukhlyak,
Mykola Hodlevskyi,
І. М. Budzulyak,
Andrii Kachmar,
Myroslava Hodlevska,
Liliia Turovska
Publication year - 2021
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.22.2.372-379
Subject(s) - graphene , materials science , oxide , composite number , spinel , grain boundary , ferrite (magnet) , dielectric spectroscopy , electrical resistivity and conductivity , chemical engineering , composite material , metallurgy , nanotechnology , microstructure , chemistry , electrochemistry , electrode , engineering , electrical engineering
The aim of this paper is to compare the structural, morphological and electrical properties of the CuFe2O4 and CuFe2O4 / reduced graphene oxide composite. XRD and Mossbauer studies have shown that joint hydrothermal synthesis of cubic copper ferrite and reduction of graphene oxide leads to a decrease in ferrite particles from 14 to 8 nm. Based on the impedance spectroscopy data, a model of the obtained composite material has been prepared as a system consisting of contacting spinel particles covered with rGO clusters and separated by porous rGO. For CuFe2O4 / rGO composite material, the predominance of hopping charge transfer mechanisms has been shown, and the activation energies of electrical conductivity of grains and grain boundaries have been calculated.