La(1−x)SrxCoO3 for thin film thermocouple applications

Synthesis, sintering, and thermoelectric properties of the solid solution La1–xSr x CoO3±δ (0 ≤ x ≤ 1)

“…Since the ionic radius of La 3+ (0.136 nm [50]) is smaller than that of Sr 2+ (0.144 nm [50]), it confirms the incorporation of Sr ions in the LaCoO 3 lattice. However, the charge neutrality in the solid solution is maintained, when the sample is substituted with Sr element, by increasing the oxygen vacancy concentration and/or the transition of the valence of Co cations from Co 3+ to Co 4+ [51][52][53]. Since both ionic radii of Co 4+ and Co 3+ are very close, 0.0545 and 0.053 nm, respectively [21], it cannot make a significant contribution to the lattice parameters.…”

Solid-state dewetting of La0.6Sr0.4Co0.2Fe0.8O3±δ thin films during annealing

“…26,27 Reactions with the substrate are possible, but no Si-containing phase could be identified with these peaks. Evaporation of Co and phase separation of the remaining oxides is also possible as it has been suggested for LSC thin films at 1000 • C. 28 However, in the temperature range for the application of these films (<800 • C) the single perovskite phase is obtained and these additional phases are of no consequence.…”

Influence of magnetic impurities on the microwave resistance of overdopedYBa2Cu3OProkhorov1, Kaminsky2, Lee3 2001Phys. Rev. B1000View full textAdd to dashboardCite

“…By extrapolating a fitted straigth line to cos 2 /sin ϭ0, a more precise determination of the lattice parameter is possible. 22 Figures 1͑b͒ and 1͑c͒ display the peak positions for the ͑005͒ and ͑007͒ reflections, respectively. Curves 1 belong to YBa 2 Cu 3 O 7Ϫ␦ thin film prepared on a similar SrTiO 3 substrate by a laser ablation method 23 and curves 2 are for the overdoped film in the present study, deposited by dc sputtering in the pure oxygen atmosphere.…”