Microstructure and ionic conductivity of Sr- and Mg-doped LaGaO3
Source abstract
Abstract
Samples of Sr- and Mg-doped LaGaO3 (LSGM) with various concentrations of Sr and Mg were prepared by using solid-state reaction method. Results show that ionic conductivities increase with the increase of relative densities. It can also be known that the optimized concentration in \({\rm La}1-x {\rm Sr}x {\rm Ga}1-y {\rm Mg}y {\rm O}3-0.5(x+y)\) with high conductivity is LSGM1520 or LSGM2015. The results also show that, in various concentrations of LSGM, equiaxed, rode-like, polygonal secondary phases such as LaSrGaO4 or LaSrGa3O7 were detected besides (La,Sr)(Ga,Mg)O3 by means of SEM and EDX. With the increase of doped elements, i.e. x + y, the grain size increases.
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Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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