Opening book details…
Can I read Doping effect on secondary phases, microstructure and electrical conductivities of LaGaO3 based perovskites on EtoBox?
Doping effect on secondary phases, microstructure and electrical conductivities of LaGaO3 based perovskites by Shuai Li; Bill Bergman is a Materials Science article available to read on EtoBox.
What is Doping effect on secondary phases, microstructure and electrical conductivities of LaGaO3 based perovskites about?
The intermediate temperature electrolytes La 1-x Sr x Ga 1-y Mg y O 3-δ (LSGM, where δ = (x + y)/2) with perovskite structure were prepared using a poly(vinyl alcohol) (PVA) solution polymerization method. Three secondary phases were identified by X-ray diffraction, LaSrGaO 4 , LaSrGa 3 O 7 and La 4 Ga 2 O 9 . The relative amount of these secondary phases depended on the doping compositions. Sr doping produced more Sr rich secondary phases with increasing content, while enhanced solid solubility was observed with Mg addition. Sintered samples showed dense microstructures with well-developed equiaxed grains, and the secondary phases were mainly in the grain boundaries. LaSrGaO 4 could not be detected by SEM for the sintered pellets. The oxygen ionic conductivity was enhanced by doping with Sr and Mg. Mg doping showed the increased conductivity activation energy. La 0.8 Sr 0.2 Ga 0.9 Mg 0.1 O 2.85 had the highest ionic conductivity σ = 0.128 S/cm at 800 • C in this work.
Who reads Doping effect on secondary phases, microstructure and electrical conductivities of LaGaO3 based perovskites?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Shuai Li; Bill Bergman
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0955-2219)
- Published
- 2009
- Language
- EN
- Field
- Materials Science (Physical Sciences)