Electrical Conduction Behavior of BaO-doped LaInO3 Perovskite Oxide

Kim, Hye Lim; Lee, Kyu Hyoung; Kim, Shin; Lee, Hong Lim

doi:10.1143/jjap.45.872

Cited by 13 publications

(8 citation statements)

References 16 publications

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“…At low temperature region (T < 300°C), the conductivity is due to mixed conduction (electronic and ionic). It could be because lanthanum indate is hygroscopic in nature and reported as mixed conductors in this region [44,45].…”

Section: Impedance Analysismentioning

confidence: 87%

Preferential occupancy of Ca2+ dopant in La1-x Ca x InO3-δ (x = 0–0.20) perovskite: structural and electrical properties

Sood

Singh

Basu

et al. 2015

Ionics

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Ca-doped LaInO 3 (LCI) has been synthesized by conventional solid-state reaction method. The structural features were investigated by X-ray diffraction, Raman spectroscopy and X-ray photoelectron spectroscopy. The structural investigation indicated that Ca 2+ dopants occupy both A-and B-sites in ABO 3 (La 1-x In x O 3-δ ). The solid solubility limit has been observed up to x = 0.10 for La 1-x Ca x InO 3-δ system. In addition, the Raman band softening has been observed with Ca-doping. The impedance spectroscopy shows that 10 mol% of Ca-doped LaInO 3 possesses the highest conductivity of the order of 1.64 mS cm −1 at 700°C among all investigated samples. The activation energy of doped samples lies within the range of 0.69-0.86 eV, which indicates that the conductivity in the reported samples is mainly contributed by ion transportation. SEM analysis supports the well-packed grains in the sintered samples.

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Section: Impedance Analysismentioning

confidence: 87%

Preferential occupancy of Ca2+ dopant in La1-x Ca x InO3-δ (x = 0–0.20) perovskite: structural and electrical properties

Sood

Singh

Basu

et al. 2015

Ionics

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“…Moreover, the phase transition occurred by increasing the Ba content. In a part of report 11) , proton conduction was observed for this system in a wet atmosphere. However, the evidence of proton conduction has not been thoroughly obtained and the effect on phase transition is not known.…”

Section: Introductionmentioning

confidence: 89%

Proton Conduction and Incorporation into La1−xBaxYb0.5In0.5O3−δ

et al. 2018

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In order to clarify the effect of the dopant concentration and phase transition on the proton conduction and proton concentration, the electrical conductivity and proton concentration were determined for La 1−x Ba x Yb 0.5 In 0.5 O 3−δ (x = 0.1. 0.3. 0.5, 0.7). The phase transition from the orthorhombic system to the cubic system was over x = 0.3. The proton/deuteron isotope effect on the conductivity was observed for all samples at 673 K. The proton concentration was independent of the barium content above 673 K. The proton concentration increased with the barium content below 673 K, but the concentration ratio of the proton to dopant decreased following an increase in the barium concentration. It was determined that the dopant concentration and phase transition do not have an in uence on the conduction and incorporation of protons into the La 1−x Ba x Yb 0.5 In 0.5 O 3−δ . [

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“…The precursors were mixed in a beaker with 100 mL of deionized water under magnetic stirring. This mixture was dried and calcined at 673 K for 2 h, followed by firing at 1773 K for 5 h for crystallization [14].…”

Section: Experimental and Simulation Methodsmentioning

confidence: 99%

“…Therefore, many types of research have been conducted to utilize these electrolytes in the SOFC. On the other hand, doped LaInO 3 has rarely been introduced for electrolyte material: He et al [13] studied the Sr-doped LaInO 3 and Kim et al [14] examined the Ba-doped LaInO 3 . However, these composites show a lower ionic conductivity than doped LaGaO 3 .…”

Section: Introductionmentioning

confidence: 99%

The Effect of Co-Doping at the A-Site on the Structure and Oxide Ion Conductivity in (Ba0.5−xSrx)La0.5InO3−δ: A Molecular Dynamics Study

Hwang

Lee

et al. 2019

Materials

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A molecular dynamics simulation was used to investigate the structural and transport properties of a (Ba0.5−xSrx)La0.5InO3−δ (x = 0, 0.1, 0.2) oxygen ion conductor. Previous studies reported that the ionic conductivity of Ba-doped LaInO3 decreases because Ba dopant forms a narrow oxygen path in the lattice, which could hinder the diffusion of oxygen ions. In this study, we reveal the mechanism to improve ionic conductivity by Ba and Sr co-doping on an La site in LaInO3 perovskite oxide. The results show that the ionic conductivity of (Ba0.5−xSrx)La0.5InO3−δ increases with an increasing number of Sr ions because oxygen diffusion paths which contain Sr ions have a larger critical radius than those containing Ba ions. The radial distribution function (RDF) calculations show that the peak heights in compositions including Sr ions were lower and broadened, meaning that the oxygen ions moved easily into other oxygen sites.

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Electrical Conduction Behavior of BaO-doped LaInO₃ Perovskite Oxide

Cited by 13 publications

References 16 publications

Preferential occupancy of Ca2+ dopant in La1-x Ca x InO3-δ (x = 0–0.20) perovskite: structural and electrical properties

Preferential occupancy of Ca2+ dopant in La1-x Ca x InO3-δ (x = 0–0.20) perovskite: structural and electrical properties

Proton Conduction and Incorporation into La<sub>1−</sub><i><sub>x</sub></i>Ba<i><sub>x</sub></i>Yb<sub>0.5</sub>In<sub>0.5</sub>O<sub>3−δ</sub>

The Effect of Co-Doping at the A-Site on the Structure and Oxide Ion Conductivity in (Ba0.5−xSrx)La0.5InO3−δ: A Molecular Dynamics Study

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