Nonlinear electrical grain boundary properties in proton conducting Y–BaZrO3supporting the space charge depletion model

2012 ◽  
Vol 14 (2) ◽  
pp. 730-740 ◽  
Author(s):  
M. Shirpour ◽  
R. Merkle ◽  
C. T. Lin ◽  
J. Maier
Keyword(s):  
Grain Boundary ◽  
Space Charge ◽  
Proton Conducting ◽  
Boundary Properties ◽  
Charge Depletion

scholarly journals Space–charge theory applied to the grain boundary impedance of proton conducting BaZr0.9Y0.1O3−δ

2010 ◽  
Vol 181 (5-7) ◽  
pp. 268-275 ◽  
Author(s):  
Christian Kjølseth ◽  
Harald Fjeld ◽  
Øystein Prytz ◽  
Paul Inge Dahl ◽  
Claude Estournès ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Space Charge ◽  
Proton Conducting ◽  
Boundary Impedance

scholarly journals Influence of Ce3+ polarons on grain boundary space-charge in proton conducting Y-doped BaCeO3

2018 ◽  
Vol 20 (23) ◽  
pp. 16209-16215 ◽  
Author(s):  
Jonathan M. Polfus ◽  
Mehdi Pishahang ◽  
Rune Bredesen
Keyword(s):  
Grain Boundary ◽  
Space Charge ◽  
Oxygen Vacancies ◽  
Proton Conducting ◽  
Space Charge Potential ◽  
Charge Potential ◽  
Type Conduction ◽  
Boundary Core ◽  
Boundary Space

Ce3+ polarons associated with oxygen vacancies in the grain boundary core lowers the space-charge potential and may enhance n-type conduction.

Sintering and Grain Boundary Properties of ZnO-Bi2O3-Sb2O3-Mn3O4-NiO Varistors

2013 ◽  
Vol 51 (5) ◽  
pp. 363-369
Author(s):  
Youn-Woo Hong ◽  
Young-Jin Lee ◽  
Sei-Ki Kim ◽  
Jin-Ho Kim
Keyword(s):  
Grain Boundary ◽  
Boundary Properties

Light Effects on Grain Boundary Properties in Silicon

1981 ◽  
Vol 5 ◽  
Author(s):  
L. J. Cheng ◽  
C. M. Shyu
Keyword(s):  
Experimental Data ◽  
Grain Boundary ◽  
Minority Carrier ◽  
State Density ◽  
Boundary State ◽  
Carrier Recombination ◽  
Boundary Properties ◽  
Light Effects ◽  
Recombination Velocity ◽  
P Type

ABSTRACTWe have studied the photoconductivity of grain boundaries in p–type silicon. The result demonstrates the applicability of the technique for the measurement of minority carrier recombination velocity at the grain boundary. The experimental data are consistent with the thought that the recombination velocity increases with the boundary state density and light intensity.

Surface defect chemistry of Y-substituted and hydrated BaZrO3 with subsurface space-charge regions

2016 ◽  
Vol 4 (19) ◽  
pp. 7437-7444 ◽  
Author(s):  
Jonathan M. Polfus ◽  
Tor S. Bjørheim ◽  
Truls Norby ◽  
Rune Bredesen
Keyword(s):  
Surface Layer ◽  
Space Charge ◽  
Space Charge Region ◽  
First Principles ◽  
Surface Defect ◽  
Surface Defects ◽  
Defect Chemistry ◽  
First Principles Calculations ◽  
Proton Conducting ◽  
Charged Species

First-principles calculations were utilized to elucidate the complete defect equilibria of surfaces of proton conducting BaZrO3, encompassing charged species adsorbed to the surface, defects in the surface layer as well as in the subsurface space-charge region and bulk.

scholarly journals Micromagnetic simulation of the orientation dependence of grain boundary properties on the coercivity of Nd-Fe-B sintered magnets

AIP Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 056028 ◽  
Author(s):  
Jun Fujisaki ◽  
Atsushi Furuya ◽  
Yuji Uehara ◽  
Koichi Shimizu ◽  
Tadashi Ataka ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Orientation Dependence ◽  
Micromagnetic Simulation ◽  
Sintered Magnets ◽  
Boundary Properties

scholarly journals Влияние влажности на электроперенос протонпроводящих перовскитов AZr-=SUB=-0.95-=/SUB=-Sc-=SUB=-0.05-=/SUB=-O-=SUB=-3-alpha-=/SUB=- (A=Ca, Sr, Ba) в окислительной атмосфере

2019 ◽  
Vol 61 (4) ◽  
pp. 645
Author(s):  
В.Б. Балакирева ◽  
В.П. Горелов ◽  
Л.А. Дунюшкина ◽  
А.В. Кузьмин
Keyword(s):  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
General Formula ◽  
Considerable Effect ◽  
Humid Atmosphere ◽  
Proton Conducting ◽  
Hydronium Ion ◽  
The Impact

AbstractThe total, bulk, and grain boundary conductivities of proton-conducting zirconates of general formula AZr_0.95Sc_0.05O_3 – α (AZS), where A = Ca, Sr, Ba, are measured in air with different humidity levels. The conductivity is measured using the four-probe dc method (600–900°C) and impedance spectroscopy (30–800°C). The impact of humid atmosphere on the total, bulk, and grain boundary conductivities of the AZS system is studied at different humidity levels: $${{p}_{{{{{\text{H}}}_{{\text{2}}}}{\text{O}}}}}$$ = 0.04, 0.61, and 2.5 kPa. Humidity is found to have a considerable effect on the conductivity of our CaZS and BaZS at lower temperatures, suggesting the likelihood of hydronium ion-mediated transport.

Reversed anisotropy of grain boundary properties and its effect on grain boundary engineering

2010 ◽  
Vol 58 (6) ◽  
pp. 1930-1937 ◽  
Author(s):  
Pavel Lejček ◽  
Aleš Jäger ◽  
Viera Gärtnerová
Keyword(s):  
Grain Boundary ◽  
Grain Boundary Engineering ◽  
Boundary Properties
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