A magnetic sheet for a wireless power charging system includes an electrode layer, first and second magnetic layers disposed on the electrode layer, and first and second adhesive layers disposed on the electrode layer. The first adhesive layer is disposed between the electrode layer and the first magnetic layer, and the second adhesive layer is disposed between the first and second magnetic layers. In one example, the first and second adhesive layers each include a plurality of core loss decreasing members, formed of at least one of an amorphous material, a ferrite material, and a synthetic material of amorphous and ferrite materials, dispersed therein. In another example, the first and second adhesive layers each include a plurality of magnetic saturation (Ms) reinforcing members, formed of at least one of a hetero-amorphous material, a nanocrystalline-amorphous material, and a synthetic material of hetero-amorphous and nanocrystalline-amorphous materials, dispersed therein.