On the issue of textured crystallization of Ba (NO3) 2 in mesoporous SiO2: Raman spectroscopy and lattice dynamics analysis

Y Shchur, G Beltramo, AS Andrushchak… - … Acta Part A: Molecular …, 2022 - Elsevier
The lattice dynamics of preferentially aligned nanocrystals formed upon drying of aqueous
Ba (NO 3) 2 solutions in a mesoporous silica glass traversed by tubular pores of …

Paraelectric KH2PO4 nanocrystals in monolithic mesoporous silica: Structure and lattice dynamics

Y Shchur, AV Kityk, VV Strelchuk, AS Nikolenko… - Journal of alloys and …, 2021 - Elsevier
Combining dielectric crystals with mesoporous solids allows a versatile design of functional
nanomaterials, where the porous host provides a mechanical rigid scaffold structure and the …

Ordered PbHPO4 nanowires: Crystal structure, energy bands and optical properties from first principles

Y Shchur, AV Kityk - Computational Materials Science, 2017 - Elsevier
Structural, electronic and high-frequency dielectric properties of both the bulk crystal and the
ordered nanostructured metamaterials, nanolayers (NLs) and nanowires (NWs) of hydrogen …

[HTML][HTML] Vibrational spectroscopic study of synthetic analogs of schultenite PbHAsO4–“phosphoschultenite” PbHPO4 solid solution series

A Wudarska, J Sordyl, M Manecki, A Zawiła, T Bajda - Polyhedron, 2022 - Elsevier
Lead hydrogen arsenate PbHAsO 4 and lead hydrogen phosphate PbHPO 4, which can
form a continuous solid solution series, have been extensively studied owing to their …

On thermodynamic and dielectric properties of PbHPO4 and PbHAsO4 crystals

IR Zachek, Y Shchur, RR Levitskii… - Physica B: Condensed …, 2014 - Elsevier
Thermodynamic and dielectric properties of PbHPO 4 and PbHAsO 4 crystals are studied
using the pseudo-spin model for proton subsystem within a two-particle cluster …

Unified lattice dynamics model for hydrogen-bonded crystals

Y Shchur - Phase Transitions, 2013 - Taylor & Francis
A unified atomistic lattice dynamics model to be used for the investigation of dielectric
crystals having a network of hydrogen bonds is suggested. The model appropriately …

Phase transition thermal dependence of ferroelectric and dielectric properties in H-bonded (LHP) crystal

MI Khan, TC Upadhyay - Applied Physics A, 2020 - Springer
In this paper, the ferroelectric phase transition and dielectric properties in order-disorder
type PbHPO _ 4 PbHPO 4 crystal are theoretically investigated. We consider the two …

Study of ferroelectric lead monohydrogen phosphate type crystals

A Rawat, TC Upadhyay - International Journal of Modern Physics B, 2017 - World Scientific
In this paper, the ferroelectric transition and dielectric properties of the lead monohydrogen
phosphate (PbHPO4) crystal are theoretically investigated. By using Green's function …

[HTML][HTML] Lattice dynamics of LiH2PO4 crystal

Y Shchur, AV Kityk - Physica B: Condensed Matter, 2022 - Elsevier
Lattice dynamics of hydrogen bonded representative of KH 2 PO 4 crystal family, LiH 2 PO 4,
was investigated within the first principles density functional theory. Phonon dispersion …

Study of structural order–disorder thermal dependence dielectric properties for PbHPO4 and PbHAsO4 crystals

MI Khan, TC Upadhyay - The European Physical Journal D, 2021 - Springer
By using the statistical Green function theory and extended two sublattice pseudospin lattice
coupled mode model Hamiltonian for proton subsystem with mean field approximation on …