Monoclinic LaGa1-xMnxGe2O7: a New Blue Chromophore based on Mn3+ in the Trigonal Bipyramidal Coordination with Longer Apical Bond Lengths

Abstract

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.