Conduction Property of Gd-doped La(Ga,Al,Mg)O3-d by controlling tolerance factor

Abstract

It is considered that tolerance factor would be a key factor in designing highly oxide ion conductor with perovskite. La_0.9Sr_0.1Ga_0.8Mg_0.2O_2.85 exhibits fast oxide ion conducting properties and tolerance factor is 0.959. The authors have controlled tolerance factor of LaGa_0.9Mg_0.1O_2.95 by doing Gd for a part of La site and Al for a part of Ga site in order to make highly oxide ion conducting compounds. In this presentation, we reported relationship between tolerance factor and oxide ion conductivity for Gd- and Al-doped LaGa_0.9Mg_0.1O_2.95.