Abstract: The magnetic materials, especially ferrites, are an important class of electromagnetic waves absorbers especially, at the range of gigahertz (GHz) frequency. Conventional absorptive materials such as metal powders and ferrites are high in density and have poor environmental stability, which restricts their usefulness in applications requiring light- weight mass . One way to overcome these problems is to use a suspending agent, which could enwrap magnetic nanocparticles and the PBD provides both electrostatic and steric repulsion against particle aggregation. Also fabrication of flexible and transparent shielding structures could widen the range of application.In this paper, Ba(Ni.5Mn0.5ZrO)Fe10O19/ Polybutadiene magnetic nanocomposite was fabricated successfully via sol-gel method and masking method. The samples were characterized using SEM, UV-visible, EDX, ATR, XRD and VSM analyses. Finally vector network analyzer was employed to determine the ability of composites in microwave absorption at the range of 8-12 GHz (X-band). The results demonstrated the transparent shielding products have considerable capability in attenuation of electromagnetic wave and a minimum reflection loss of 9.1 db was obtained at 10.4 GHz for ferrite/PBD 10wt%.