Department of Materials Science and Engineering, National University of Singapore, 119260, Singapore;
Department of Materials Science and Engineering, National University of Singapore, 119260, Singapore;
Department of Electrical & Computer Engineering, National University of Singapore, 119260, Singapore;
Department of Materials Science and Engineering, National University of Singapore, 119260, Singapore;
Department of Materials Science and Engineering, National University of Singapore, 119260, Singapore;
Department of Materials Science and Engineering, National University of Singapore, 119260, Singapore;
Department of Materials Science and Engineering, National University of Singapore, 119260, Singapore;
Ni/NiO composite; post annealing; exchange coupling; enhanced coercivity;