SIFAT ELEKTRON ATOM Mn DI STRUKTUR PEROVSKITE PADA KRISTAL TUNGGAL La2-2xSr1+2xMn2O7 (x= 0,40)[Electron Properties of Mn Atom on Perovskite Structure of La2-2xSr1+2xMn2O7 (x= 0,40) Single Crystal] - Agung Imaduddin (National Research and Innovation Agency (BRIN), 2012)