Registration Number
0223U005108,
0123U102727
, R & D reports
Title
The influence of size effects on the electrophysical properties of graphene-ferroelectric nanostructures
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Head
Morozovska Hanna М., Доктор фізико-математичних наук
Registration Date
14-12-2023
Organization
Institute of Physics of National Academy of Sciences of Ukraine
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The object of research is ferroelectrics, graphene, graphene-ferroelectric nanostructures and complexes.
The subject of research is dimensional effects of electrophysical, polar, magnetic and magnetoelectric properties of graphene-ferroelectric nanostructures.
The goal is to establish the influence of dimensional effects on the electrophysical, polar, magnetic and magnetoelectric properties of graphene-ferroelectric nanostructures (GFENS) for the creation of the latest non-volatile memory devices and ultra-sensitive sensors.
The goal of the 2nd stage is to analyze the influence of dimensional effects on polar and spectroscopic properties of ferroelectrics-multiferroics and graphene, and further development of an analytical description of hysteresis-type memory effects in GFENS.
Main results. As a result of the 2nd stage, studies of the influence of dimensional effects on the polar, spectroscopic and electrophysical characteristics of graphene-ferroelectric nanostructures were continued; a theoretical analysis of the most interesting and promising manifestations of hysteresis-type memory effects in graphene-ferroelectric nanostructures was carried out. In particular:
1) Using the Landau-Ginsburg-Devonshire effective free energy, it was analyzed how the polarization of Hf1-xZrxO2 films affects the hysteresis-type memory effects in graphene-ferroelectric nanostructures.
2) The results of Raman spectroscopy, X-ray diffraction, infrared spectroscopy and measurements of the magnetic properties of multiferroics of the ferroelectric-antiferromagnetic type Bi1-xRExFeO3 (RE - rare earth elements La, Lu or Sm) were analyzed.
3) The origin and stability conditions of the hexagonal phase in LuFeO3 nanoparticles, in which the nanoparticle is a weak ferromagnet at room temperature with pronounced structural and ferroelectric long-range ordering, were analyzed.
Product Description
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Bodnaruk Andriy Vasyl’jvych
Golub Pavlo V.
Morozovska Hanna Мykolaivna
Rallev Maksym V.
Starynets Serhii M.
Tkachenko Vitaly Sergiyovych
Fesenko Olena M.
Yaremkevych Andriy D
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2023-12-14
