Registration Number
0124U004302,
(
0224U032861
0225U003292
0225U004367
0226U004367
)
R & D request
Title
Layered ferroics MM'P₂S(Se)₆ with unique functional properties for nanoscale heterostructures.
Head
Vysochanskyi Yulian M., Доктор фізико-математичних наук
Registration Date
08-10-2024
Organization
Uzhhorod National University State Higher Educational Institution
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The work involves a combination of technological, experimental and theoretical studies of phosphorus-containing chalcogenide van der Waals single crystals MM'P₂S(Se)₆ (M - Cu, Ag; M' - In, Bi) and heterostructures based on them. The electronic and phonon spectra of crystals, size effects in nanolayers and heterostructures, ferroelectric, semiconducting and thermodynamic properties will be studied. Spontaneous polarization switching kinetics and dielectric properties, ionic conductivity and resistive switching of layered CuInP₂S₆ crystals with chemically modified properties will be studied. The study of the synergy of thermally activated copper or silver cations and the anharmonic dynamics of indium or bismuth cations in the spontaneous dipole ordering and in the cation migration controlled by electric field pulses through the structural layers will facilitate the design of new electronic devices based on the connection between the ferroelectric properties and the ionic conductivity of nanoscale layered packages of CuInP₂S₆ or AgBiP₂Se₆ compounds. The results of the work will be the basis for the creation of functional elements of devices for efficient processing of dynamic information with high density, covering spatial and temporal aspects, which is important for machine vision systems.
popup.nrat_date
2024-12-09
