Identification of ultradilute dopants in ceramics I.Tanaka, T.Mizoguchi, M.Matsui, S.Yoshioka, H.Adachi, T.Yamamoto, T.Okajima, M.Umesaki, W.Y.Ching, Y.Inoue, M.Mizuno, H.Araki and Y.Shirai. Nature materials. 2003. 2, 541-545
First Principles Calculations of Formation Energies and Electronic Structures of Defects in Oxygen-Deficient LiMn2O4 Y.Koyama, I.Tanaka, H.Adachi, Y.Uchimoto and M.Wakihara. J.Electrochem.Soc. 2003. 150, A63-A67
Electronic Structures and Electrode Potentials of Layered Lithium Insertion Electrodes by First Principles Calculation Y.Koyama, I.Tanaka and H.adachi. Advances in Quantum Chemistry. 2003. 42. 145-162