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- W1969960556 abstract "La1−xSrxGa1−yMgyO3−δ (x=0.1–0.2, y=0.1–0.2) (LSGM) electrolytes, which have high ionic conductivities, were synthesized by a solid-state reaction at 1500 °C. In our study, La0.9Sr0.1Ga0.9Mg0.1O3−δ and La0.9Sr0.1Ga0.8Mg0.2O3−δ crystallized in an orthorhombic (Imma) structure, and La1−xSrxGa1−yMgyO3−δ (0.1<x≤0.2, 0.17≤y≤0.2) crystallized in a rhombohedral (R3̄c) structure. Active Raman bands at approximately 532, 674, and 750 cm−1 were observed in these samples because of the decrease in local symmetry induced by the oxygen vacancies. When x+y>0.35, the conductivity was approximately 0.164–0.173 S/cm at 800 °C. The ionic conductivity mechanism changed at temperatures of approximately 500–650 °C. La0.9Sr0.1Ga0.9Mg0.1O3−δ and La0.9Sr0.1Ga0.8Mg0.2O3−δ samples possessed higher resistances at 300–400 °C as a result of existing stacking faults and defects. The thermal expansion coefficients (TECs) were approximately 9.1×10−6/°C to 11×10−6/°C at 200–500 °C." @default.
- W1969960556 created "2016-06-24" @default.
- W1969960556 creator A5033771650 @default.
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- W1969960556 date "2013-12-01" @default.
- W1969960556 modified "2023-10-15" @default.
- W1969960556 title "Properties and microstructural analysis of La1−xSrxGa1−yMgyO3−δ solid electrolyte ceramic" @default.
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- W1969960556 doi "https://doi.org/10.1016/j.ceramint.2013.05.050" @default.
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