Date of Award
Master of Science
Materials Science and Engineering
Chuck Melcher, Narendra Dahotre
Single phase polycrystalline Li6Y(BO3)3:Ce has been produced with substitutions of Ca, Sc, La, Sr, Gd, and Lu substituting for Y. Samples included isotopes of 6-Li and 11-B through isotopically enriched Li2CO3 and H3BO3. X-ray powder diffraction was used to verify the phase(s) present, while Rietveld refinements provided lattice parameters. Photoluminescence data were collected to verify Ce activation and proper location within the crystal structure. The amount of Ce and Ca were then varied to survey the best composition for scintillation properties within Li6Y(BO3)3 based on results of pulse-height measurements. A single crystal of Li6Y0.8Ce0.1(BO3)3 was then grown using the Czochralski method which produced a boule weighing 38g.
Sheats, Emily Ann, "Synthesis and Structure of Li6Y(BO3)3 as a Neutron Scintillator. " Master's Thesis, University of Tennessee, 2007.