Nonlinear resonant and high dielectric loss behavior of CdSα- Fe ₂O₃ heterostructure nanocomposites

CdSα- Fe₂O₃ heterostructures, where the CdS nanorods grow irregularly on the side surface of α- Fe₂O ₃ nanorods, were synthesized via a three-step process. The dielectric properties of the CdSα- Fe₂O₃ heterostructure nanocomposites have been investigated. The equivalent circuit model of the CdSα- Fe₂O₃ heterostructures was established, which reasonably explained the nonlinear dielectric resonant behavior of the CdSα- Fe₂O₃ heterostructure nanocomposites in the range of 5-15 GHz. The high dielectric loss is mainly attributed to the conductance loss and the dipole relaxation loss in the CdSα- Fe ₂O₃ heterostructures.