Toward defect engineering strategies to optimize energy and electronic materials

EN Sgourou, Y Panayiotatos, RV Vovk, A Chroneos - Applied Sciences, 2017 - mdpi.com
The technological requirement to optimize materials for energy and electronic materials has
led to the use of defect engineering strategies. These strategies take advantage of the …

Peculiarities of pseudogap in Y0.95Pr0.05Ba2Cu3O7−δ single crystals under pressure up to 1.7 GPa

AL Solovjov, LV Omelchenko, EV Petrenko, RV Vovk… - Scientific Reports, 2019 - nature.com
The effect of hydrostatic pressure up to P= 1.7 GPa on the fluctuation conductivity σ′(T) and
pseudogap∆*(T) in Y0. 95Pr0. 05Ba2Cu3O7− δ single crystal with critical temperature Тс …

Fluctuation conductivity and pseudogap in HoBa2Cu3O7-δ single crystals under pressure with transport current flowing under an angle 45° to the twin boundaries

AL Solovjov, MA Tkachenko, RV Vovk… - Physica C …, 2014 - Elsevier
The influence of hydrostatic pressure up to 0.48 GPa on the fluctuation conductivity σ′(T)
and pseudogap (PG) Δ∗(T) of slightly doped HoBa 2 Cu 3 O 7-δ single crystals with T c≈ 62 …

Electric transport and the pseudogap in the 1-2-3 HTSC system, under all-around compression

RV Vovk, AL Solovjov - Low Temperature Physics, 2018 - pubs.aip.org
The problem of how high pressure impacts various electric transport mechanisms in HTSC
compounds REBa 2 Cu 3 O 7-δ (RE= Y, or another rare-earth ion) is considered. The …

Modelling the Defect Processes of Materials for Energy Applications

EN Sgourou, A Daskalopulu, I Goulatis… - Applied Sciences, 2022 - mdpi.com
The technological requirement for ever more efficient materials for the energy and
electronics sectors has led to the consideration of numerous compositionally and structurally …

Resistive measurements of the pseudogap in lightly Pr-doped Y1− xPrxBa2Cu3O7− δ single crystals under high hydrostatic pressure

RV Vovk, GY Khadzhai, OV Dobrovolskiy - Solid State Communications, 2015 - Elsevier
The effect of high hydrostatic pressure on the basal-plane electrical conductivity of lightly Pr-
doped Y 1− x Pr x Ba 2 Cu 3 O 7− δ (x≤ 0.05) single crystals is investigated. The excess …

Effect of praseodymium on the electrical resistance of YВа2Сu3О7− δ single crystals

RV Vovk, NR Vovk, GY Khadzhai, IL Goulatis… - Solid State …, 2014 - Elsevier
The electrical resistivity in the ab-plane of the Y 1− y Pr y Ва 2 Сu 3 О 7− δ single crystals
with high degree of perfection in the interval of Т c–300 K was investigated. The increasing …

Fluctuation conductivity of oxygen underdoped YBa2Cu3O7− δ single crystals

RV Vovk, GY Khadzhai, IL Goulatis… - Physica B: Condensed …, 2014 - Elsevier
The electrical resistance in the range of Т C–300 K in the layer planes of YВа 2 Сu 3 О 7− δ
single crystals with a range of oxygen deficiency (providing a range of TC from 78 to 92 K) …

Transverse conductivity in PrYBaCuO single crystals in a wide range of praseodymium concentrations

RV Vovk, GY Khadzhai, OV Dobrovolskiy - Applied Physics A, 2014 - Springer
The electrical resistance across the layers of high-quality Pr _y y Y _ 1-y 1-y Ba _2 2 Cu _3 3
O _ 7-δ 7-δ single crystals is measured in the temperature interval T_\rm c-300 T c-300 K …

Effect of Structural Relaxation on the In-Plane Electrical Resistance of Oxygen-Underdoped ReBaCuO (Re = Y, Ho) Single Crystals

RV Vovk, NR Vovk, OV Dobrovolskiy - Journal of Low Temperature …, 2014 - Springer
The effect of jumpwise temperature variation and room-temperature storing on the basal-
plane electrical resistivity ρ _ ab ρ ab of underdoped ReBa _2 2 Cu _3 3 O _ 7-δ 7-δ (Re= Y …