Synthesis of La0.6Sr0.4FeO3/La0.6Sr0.4CoO3 mixed ion conducting superlattices by PLD

Ionically Conducting Two‐Dimensional Heterostructures

“…REVIEW www.advmat.de Also by the same group, La 0.6 Sr 0.4 FeO 3 /La 0.6 Sr 0.4 CoO 3 heterolayers were grown by PLD in order to explore interfacial effects on the mixed conductivities. [98] With the confirmed epitaxial interfaces between the two oxide layers, the electrical conductivity of the heterolayer was found to be slightly higher than the average value of the two individual layers. As one refers more to the electronic conductivity, this system is not directly relevant for our theme, even though interesting with respect to solid state ionic devices.…”

Electrochemical stability of (La,Sr)CoO3−δ in (La,Sr)CoO3−δ/(Ce, Gd)O2−δ heterostructures

“…Satellite peaks of CGO and LSC are visible at higher and lower angles with respect to the main reflection peaks, indicating high-quality of the heterostructures. 16,18,48,49 The values of full width at half maximum (FWHM) are between 0.5°<2 < 1.3° (Figure 1b), suggesting a high degree of crystallinity and low structural and microstructural mosaic disorder in the films. Especially, the crystallinity of the films improves by decreasing N and increasing the thickness This effect is likely due to the theoretical mismatch between CGO and LSC is 0.92%.…”

“…in multilayer thin films stacked at the nanoscale, electronic and ionic properties at interfaces can also be mixed and enhanced by varying layer characteristics and new properties in such heterostructures come from lattice strain and interface mobility effects, resulting even in enhanced chemical stability. [16][17][18][19][20] MeOs such as oxygen defective cerium oxide (ceria) fluorite, CeO 2- , and cobalt-based perovskites are a good example of such tunability. Ceria is a MIEC under reducing atmospheres, where formation of oxygen vacancies are compensated by the formation of polaron defects due to Ce 4+ /Ce 3+ valence changes.…”

Electron-Ion Mixed Conduction of Nd0.6Sr0.4FeO3Cathode Electrode Thin Film for Solid Oxide Fuel Cell

“…Similar behavior has been reported in La1-xSrxFeO3 (LSFO), which is expected for electrode material of Solid oxide fuel cell (SOFC) at intermediate temperature (IMT) region (2,3). In the research area of electrochemistry, the LSFO thin film is well known as electronion mixed conductor (4,5). Although the LSFO is promising material for activation at the interface reaction between electrolyte and electrode (6), the chemical stability has not been proved thus far.…”