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Information × Registration Number 0223U005108, 0123U102727 , R & D reports Title The influence of size effects on the electrophysical properties of graphene-ferroelectric nanostructures popup.stage_title Head Morozovska Hanna М., Доктор фізико-математичних наук Registration Date 14-12-2023 Organization Institute of Physics of National Academy of Sciences of Ukraine popup.description2 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 popup.authors 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 popup.nrat_date 2023-12-14 Close