Improving proton conductivity by navigating proton trapping in high scandium-doped barium zirconate electrolytes

CY Regalado Vera, H Ding, J Urban-Klaehn… - Chemistry of …, 2023 - ACS Publications
Proton-conducting oxides are used in intermediate-temperature (300° C< T< 700° C)
applications of fuel cells, electrolyzers, membrane reactors, hydrogen pumps, and sensors …

Enhanced photocatalytic efficiency of BaTiO3 augmented by ZnS nanospheres via Type-II heterojunction for methyl orange degradation

G Swarupa, N Anuradha, K Narsimha… - Materials Science in …, 2024 - Elsevier
The degradation of organic pollutants is significantly influenced by the recombination of
photogenerated electron–hole pair, electron transfer and surface area of a photocatalyst …

Effects of lanthanum doping on the dielectric properties of Ba (Fe0. 5Nb0. 5) O3 ceramic

CY Chung, YH Chang, GJ Chen - Journal of applied physics, 2004 - pubs.aip.org
The relaxor type of ferroelectric material Ba (FeNb) 1∕ 2 O 3⁠, which has a partially
disordered perovskite structure, has been characterized and shown a maximum plateau of …

Effects of bismuth doping on the dielectric properties of Ba (Fe0. 5Nb0. 5) O3 ceramic

CY Chung, YS Chang, GJ Chen, CC Chung… - Solid state …, 2008 - Elsevier
The ferroelectric ceramic Ba1− xBix (Fe0. 5Nb0. 5) 1− x/4O3 (BBFN) is synthesized by a
solid-state reaction. It has a partially disordered perovskite structure and shows a maximum …

Hydrated doped-BaZrO3 proton conductors studied by positron annihilation lifetime spectroscopy

J Urban-Klaehn, CYR Vera, R Zaleski, H Ding, H Luo… - Solid State Ionics, 2023 - Elsevier
The study of defect chemistry for doped BaZrO 3 proton conductors is of particular interest
because of defect interactions that can affect the proton conductivity of the material. Protons …

Electron paramagnetic resonance and positron annihilation study of the compensation mechanisms in donor-doped BaTiO3 ceramics

MS Castro, W Salgueiro, A Somoza - Journal of Physics and Chemistry of …, 2007 - Elsevier
A study of the defect structure of BaTiO3-based ceramics and their correlation with the
compensation mechanisms is presented. The addition of different Nb2O5, Sb2O3 or La2O3 …

Correlation between interfacial defects and ferromagnetism of BaTiO3 nanocrystals studied by positron annihilation

ZY Chen, ZQ Chen, DD Wang, SJ Wang - Applied surface science, 2011 - Elsevier
High purity BaTiO3 nanopowders were pressed into pellets and annealed between 100 and
1200° C. The crystal quality and grain size of the BaTiO3 nanocrystals were characterized …

Methodology and algorithm of multicomponent analysis of positron annihilation spectra for nanostructured functional materials

HI Klym, AI Ivanusa, Y Kostiv, D Chalyy, T Tkachuk… - 2017 - sci.ldubgd.edu.ua
Methodology for treatment of positron annihilation lifetime spectra by LT computer program
in the nanostructured ceramic materials was proposed. Features of mathematical description …

Cation vacancies in perovskites doped with La and Gd

ER Vance, JV Hanna… - Advances in Applied …, 2012 - journals.sagepub.com
Whereas doping CaTiO3 or SrTiO3 with∼ 0· 05 formula units (fu) of trivalent rare earth ions
substituted for Ca can yield majority positron annihilation lifetime τ 1 increases of up to 30 …

Positron Annihilation Lifetime Study of Vacancies in Nb‐Doped Rutile

ER Vance, JH Hadley Jr, FH Hsu - Journal of the American …, 2008 - Wiley Online Library
Nb‐doped rutile produced by sintering at 1400° C in an air atmosphere led to a monotonic
increase of the shortest τ1 lifetime of the major spectral component from 0.17 to 0.25 ns in …