1. Department of Materials Science & Engineering, Kyushu University, 744, Motooka, Nishi, Fukuoka, 819-0395, Japan, FEI Company Japan Ltd., 13-34, Kohnan 2, Minato, Tokyo, 108-0075, Japan, FEI Company, Achtseweg Noord 5, P.O. Box 218, 56000 MD Eindhoven, The Netherlands, Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, U.K., Department of Inorganic Chemistry, Fritz-Haber-Institute (MPG), Faradayweg 4-6, D-14195 Berlin, Germany, and Insistute of...