“…Nanoparticle exsolution on perovskite oxides has been a ''hot topic'' and focus of extensive research for more than a decade. Ni, 28,[31][32][33]38,39,41,45,47 Co, 80 Fe, 67,74 Ru, 90,93 Ag, [95][96][97] Au, 100 Fe-Ni, 35,[49][50][51][53][54][55][56][57][58][59]62,64 Co-Ni, 83 Co-Fe, 75,77,[79][80][81][82][83][84] Fe-Re, 49 (Pr,Ba)O x 103 Ellipsoidal 23 Ni, 29,30,32,40,46 Co, 87,88 Fe, 69,72,73 Ru,…”