Mohammad Dani PSTBM-BATAN Indonesia
Parikin Parikin Center for Science and Technology of Advanced Materials, National Nuclear EnergyAgency Indonesia
R. Iskandar 2Central Facility for Electron Microscopy (GFE), RWTH Aachen University, Ahornstr.55,D-52074 Aachen Germany
A. Dimyati Center for Science and Technology of Advanced Materials, National Nuclear EnergyAgency Indonesia