The samples of La_(0.6)Dy_(0.1)Sr_(0.3)MnO_3/(Ag_2O)_(x/2)(x = 0.00, 0.02, 0.04, 0.06, 0.08, 0.10, 0.20, 0.25, and 0.30) were prepared by using the solid-state
Superfine cerium-zinc oxides Ce_(1-x)Zn_xO_(2-x) with x = 0, 0.1, 0.3, 0.5, and 1.0 were obtained by grinding Ce(SO_4)_2·4H_2O,ZnSO_4·7H_2O and NH_4HCO_3 unde