Abstract
Ba 0.6 Sr 0.4 TiO 3 / Ni 0.8 Zn 0.2 Fe 2 O 4 (BST/NZO) composites were synthesized via the conventional solid-state reaction method. The phase composition and surface morphology of the composites were investigated using x-ray diffractometry and scanning electron microscope, respectively. The dielectric and magnetic properties of the composites were studied. The results show that the BST/NZO composites have giant dielectric constants and very high permeabilities. For the 10%BST/90%NZO composite, the dielectric constant and permeability in low frequency range are about 150 000 and 29, respectively. The giant dielectric behavior of the BST/NZO composites is mainly attributed to the Maxwell–Wagner polarization.
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