Monoclinic LaGa1-xMnxGe2O7: a new blue chromophore based on Mn3+ in the trigonal bipyramidal coordination with longer apical bond lengths

摘要

New blue inorganic oxide materials LaGa1-xMnxGe2O7 are developed by a solid state reaction method. Substitution of Mn3+ in LaGaGe2O7 changes the color from white (x = 0) to blue (x = 0.1-0.4). The blue color is due to the absorption in the energy region of 1.7-2.5 eV.