Abstract
This paper presents the synthesis and study of their structural, optical, series, and parallel capacitance and their series resistance of epoxy resin polymer composite (ERPC) panels incorporated with the variation in wt% of dysprosium ions. According to X-ray diffraction (XRD), ERP acquires an amorphous nature with a wt% dysprosium ion filler. It can be concluded that the addition of dysprosium ion fillers has a significant impact on the ERP structure. Therefore, no additional peaks at XRD spectra of composite systems were observed. This confirms the crystal-free and miscible dysprosium ion in the ERP matrix. Using the absorption spectra of the neat ERP panel and dysprosium ion/ERPC panels, the direct optical bandgaps and the Urbach energy were calculated. The absorption edge shifted to lower photon energy sides with increasing wt% dysprosium ion. Adding wt% dysprosium ion significantly changed each relation of the neat ERP panel's nonlinear refractive index. A frequency dependence study has been conducted on the capacitance and resistance in neat ERP and dysprosium ion/ ERPC panel structures at frequencies between 3 kHz and 10 MHz. Theoretical and experimental results agree over the entire measurement range. The observed decrease in serial capacitance at high frequencies with the change in wt% dysprosium ion doping cannot be explained by the proposed model with constant parameter values. Thus, the prepared ERPC panels doped with dysprosium ion filler samples are promising materials for practical use as transducer material devices.