Revealing the effect of gamma irradiation on structural, ferromagnetic resonance, optical, and dispersion properties of PVC/Mn_(0.5)Zn_(0.5)Fe_2O_4 nanocomposite films

摘要

Herein, this work aims to reveal the impact of gamma irradiation with different doses on structural, ferromagnetic resonance, optical, and dispersion properties of PVC/Mn0.5Zn0.5Fe2O4 nanocomposite films. The Mn0.5Zn0.5Fe2O4 nanoparticles (NPs) were synthesized via the sol-gel method. XRD pattern of Mn0.5Zn0.5Fe2O4 powder confirmed of presence of the hematite (alpha-Fe2O3) as a second phase. The PVC/Mn0.5Zn0.5Fe2O4 nanocomposite films were assembled via the solution casting technique. The EDX spectra confirmed the elemental composition of Mn0.5Zn0.5Fe2O4 NPs. Also, the XRD, and FTIR patterns proved the successful preparation of PVC/ Mn0.5Zn0.5Fe2O4 nanocomposite films. The effect of radiation on the produced defects has a significant role in tuning the properties. Likewise, the ferromagnetic resonance behavior was examined via EPR spectrometer. The number of spins was reduced sharply as the gamma-rays doses increasing up to 50 kGy and then increased at 75 kGy. The energy gap was decreased by increasing the irradiation doses up to 50 kGy and then increased at 75 kGy. Besides, a remarkable impact of gamma-irradiation on the oscillator energy and the dispersion energy of pristine and gamma rays irradiated PVC/Mn0.5Zn0.5Fe2O4 nanocomposite films was detected. Further, the static dielectric constant was decreased with the increase in the gamma irradiation doses. Moreover, the nonlinear optical susceptibility was reduced with the increase in the gamma irradiation doses. Furthermore, the VELF, SELF functions and the optical conductivity were enhanced as the gamma- rays doses increased. Overall, the linear/nonlinear optical and dispersion properties of irradiated PVC/Mn0.5Zn0.5Fe2O4 nanocomposite films make of them proper materials for flexible optoelectronic devices.